Thank you, Sheng. Hello everyone. Again, we apologize for the delay in release our earnings announcement today also the delays in our conference call. We actually closed 2015 with a very solid quarter both financially and operationally. For the full-year 2015, we are pleased to report that we have successfully accomplished the ambitious subsidiaries that we sat for last March, mainly exiting 2015 with more than 600 million monthly mobile active users doubling our annual revenues and making both mobile and overseas revenues the last maturity of our total revenue. Overall, 2015 marked an important and successful milestone for our transformation into a leading global mobile internet company having a tap for more sustainable and profitable growth in the future. Now, I’ll walk you through the details of our financial performance, all financial numbers are in RMB unless otherwise noted. Total revenues grew by 92% year-over-year and 12% quarter-over-quarter to RMB1.13 billion in the fourth quarter. For the full year 2015, our total revenues increased by 109% year-over-year to RMB3.68 billion. This strong performance was again driven by our mobile and global businesses. By platform, mobile revenues grew by 262% year-over-year and 14% quarter-over-quarter to RMB804 million for the fourth quarter. Mobile revenues account for 71% of our total revenues in the quarter up from 38% in the prior year period, and 70% in the previous quarter. In December, Cheetah has approximately 635 million mobile monthly active users worldwide, a 61% increase from the year ago and about 12% increase from September 2015. For the full-year 2015, mobile revenues grew by 423% year-over-year to RMB2.43 billion and accounted for 66% of total revenues in 2015. PC revenue declined by 10% year-over-year in Q4 and 4% year-over-year in the full-year 2015, the decreases in PC revenues were mainly due to the migration of internet traffic from PC to mobile in China. By region, overseas revenues were RMB616 million for the quarter up 343% year-over-year and 15% quarter-over-quarter. Overseas revenues accounted for 54% of total revenues and 77% of mobile revenues in the quarter. For the full-year 2015, overseas revenues grew by 730% year-over-year to RMB1.84 billion and contributed to 50% of total revenues or 76% of mobile revenues in 2015 up from 13% total revenues and 48% of mobile revenues in 2014. The increase was primarily driven by the growth of our overseas mobile user base and rapid adoption of mobile advertising business in the overseas market. In December, 79% of our mobile user Mobile MAUs, were from the overseas market compared to 69% a year ago and 74% in the September 2015. China revenues grew by 15% year-over-year and 10% quarter-over-quarter in Q4 supported by strong mobile advertising revenues which more than offset PC revenue declines in China. For the full-year, China revenue grew 20% year-over-year. By segment, revenue from online market services were RMB1.03 billion for the quarter, up 131% year-over-year and 15% quarter-over-quarter. For the full year 2015 revenues from online marketing services grew 145% year-over-year to RMB3.24 billion. Revenue from IVAS for the fourth quarter were approximately 89%, a decrease of 35% year-over-year and 10% quarter-over-quarter. For the full-year 2015, roughly from IVAS decreased by 1% year-over-year to RMB395 million, the decreases were primarily due to a temporary suspension of our online lottery operation in response to regulation changes in China and the overall softness of working factors in the Chinese markets. Revenue from Internet security services and other for the quarter were approximately RMB12 million, an increase of 106% year-over-year and 37% quarter-over-quarter. For the full-year 2015, revenues from internet security services and others increased by 12% year-over-year to RMB45 million. The increases were mainly due to the sales of our air purifier product. Now moving to costs and expenses. SBC expenses for the fourth quarter were approximately RMB99 million compared to RMB51 million in the same period last year and RMB115 million in the prior quarter. SBC expenses for the total year 2015 were approximately RMB315 million compared to RMB132 million in 2014. As we said in the past, we will incur higher SBC expenses mainly due to share and options planned to management employees for attracting and retaining top talent for the still leading R&D area. To help facilitate the discussions of the company’s operating performance, the following discussion will be on a non-GAAP basis, which excludes stock-based compensation expenses. For financial information presented in accordance with U.S. GAAP, please refer to our press release which is available on our website. Non-GAAP cost of revenues for the fourth quarter were RMB299 million, up 113% year-over-year and 11% quarter-over-quarter. Non-GAAP cost of revenues for the full-year 2015 were RMB934 million up 132% year-over-year. The increases were primarily due to higher traffics and costs associated with the Cheetah mobile and app platform business, higher bandwidth and Internet data center cost associated with increased user traffic worldwide and data analytics. Non-GAAP gross margin for the fourth quarter was RMB834 million, up 86% year-over-year and 13% quarter-over-quarter. Non-GAAP gross profit for the full-year 2015 were RMB2.75 billion up 102% year-over-year. Non-GAAP R&D expenses for the fourth quarter were RMB160 million, up 52% year-over-year and 16% quarter-over-quarter. Non-GAAP R&D expenses for the full-year 2015 were RMB545 million up 41% year-over-year. The increases were primarily due to increased headcount associated with the expansion of our mobile business. On a net basis, we added about 350 R&D staff in 2015. Non-GAAP sales and marketing expenditure for the fourth quarter RMB500 million, up 175% year-over-year and 33% quarter-over-quarter. Non-GAAP sales and marketing expenses for the full-year 2015 were RMB1.46 billion up 155% year-over-year. The sequential increase in sales and marketing expenditure was primarily due to spending on promotional activities for our mobile business, the global promotional activities associated with the launch of our Piano Tiles 2 product. Non-GAAP G&A expenses for the fourth quarter were RMB46 million, representing a decrease of 3% year-over-year and 5% quarter-over-quarter. The decreases were mainly due to lower professional service fees. Non-GAAP G&A expenses for the full-year 2015 were RMB217 million up 95% year-over-year. The year-over-year increase was mainly due to increase in professional fees and headcount associated with being a publicly listed company. The company recognized impairment losses of goodwill and intangible assets of RMB13 million for the fourth quarter of 2015 and RMB15 million for 2015 respectively. The impairment losses were primarily associated with our online lottery business. The online lottery business was temporarily suspended in response to regulatory changes in China. Other operating income was RMB16 million for the fourth quarter 2015 and RMB98 million for the full-year 2015 respectively. Other operating income primarily consisted of government grants, subsidies and financial incentives that the company received for its operations that fell outside the scope of R&D project subsidies. Non-GAAP operating profit for the fourth quarter was RMB175 million, an increase of 66% year-over-year and 7% quarter-over-quarter. Non-GAAP operating profit for the full-year 2015 was RMB522 million, an increase of 104% year-over-year. Non-GAAP net income for the fourth quarter was RMB166 million, an increase of 88% year-over-year and 9% quarter-over-quarter. Non-GAAP net income for the full-year 2015 was RMB492 million, an increase of 104% year-over-year. Non-GAAP diluted earnings per share per ADS for the fourth quarter increased by 84% year-over-year and 9% quarter-over-quarter to RMB1.09 or $0.17. Non-GAAP diluted earnings per ADS for the full-year 2015 increased by 92% year-over-year to RMB3.45 or $0.53. Adjusted EBITDA for the fourth quarter was RMB213 million, an increase of 62% year-over-year and 6% quarter-over-quarter. Adjusted EBITDA for the full-year 2015 was RMB669 million, an increase of 100% year-over-year. Again, to remind everyone, adjusted EBITDA is a non-GAAP measure that is defined as earnings before interest, tax depreciation and amortization added on operating income and share based compensation expenses. Now, let me provide you with our first quarter revenue guidance and full-year 2016 outlook. We currently expect total revenues for the first quarter to be between RMB1.08 billion and RMB1.1 billion representing a 61% to 64% year-over-year increase. The high sequential decline in revenues in the first quarter was expected mainly due to two factors, one is seasonality, with 90% of our revenue coming from online marketing services our overall revenues are subject to seasonal fluctuations. Revenues from online marketing services are typically higher in the fourth quarter and much weaker in the first quarter of each year, particularly in the U.S. and China, the two most important mobile markets for us. And two, more than expected seasonal fluctuation in revenues generated from our largest third party advertising platform partner. However, as Sheng mentioned earlier we have implemented a number of initiatives to strengthen our direct sales network globally particularly in the U.S. In addition, we also, we streamline our operation in particular we will be more focused on optimizing our marketing spending in 2016. We expect this initiative to payoff beginning in the second quarter. As such, for the full-year 2016, we will target to achieve 60% year-over-year increase in revenues and on RMB1 billion non-GAAP net income. As Sheng mentioned, that’s about 13% non-GAAP net margin or almost 4% margin expansion that we try to achieve in 2016. Please note that the forecast reflects the company’s current and preliminary view and is subject to change. Finally, we also, the board has also announced a share repurchase program. On March 16, 2016, the company’s board of directors approved a share repurchase program whereby the company may purchase its share or ADS with an aggregate value up to US$100 million over the next 12-month period. So, with that, that concludes our prepared remarks for today. Operator, we are now ready to take questions.