Thanks, operator. Good morning and good evening to everyone on the call, and welcome to Aurora Mobile's first quarter 2020 earnings call. This first quarter of 2020 has proven to be a challenging one for many companies, including us. Firstly, the quarter is typically seasonally weak one due to the Chinese New Year holiday. This year the COVID-19 outbreak adversely impacted this seasonally slow period even further across China. Many businesses were temporarily shut down or delayed restarting their operations for many weeks, as the pandemic unfolded. Despite the slower-than-expected period, we ramped back up to 100% capacity by the middle of March [along] with most of our customers, who resumed normal operations in mid-to-late March. During this period of temporary disruption, we took the initiative to further strengthen our core competencies. This included narrowing our focus on Developer Services, improving operational and technical efficiency, streamlining internal procedures and reinforcing our commitment to delivering exceptional customer service. With these initiatives now in place, we believe we will emerge from this pandemic stronger than ever, and ideally positioned to better adapt to the current uncertainties that hang over the market. With that in mind, let’s begin our review on our key operating and financial performance for the first quarter of 2020. First, the number of mobile apps utilizing at least one of our developer services or the cumulative app installations reached to 1.49 million as of March 31, 2020, from approximately 1.17 million last March. This represents an average of 16,000 new apps coming on board every month during the quarter. This was an impressive achievement considering the difficult and challenging operating environment during the first quarter. Second, cumulative SDK installations increased by 64% to 37.2 billion as of March 2020, from 22.7 billion in March 2019. Third, the number of monthly active unique mobile devices we cover continued to increase, reaching 1.36 billion in March 2020, from 1.07 billion in March 2019. This was fueled by the increasing number of apps that used our SDK, particularly as JVerification SDK becomes more widely adopted across the market. Lastly, in the first quarter of 2020, we saw the number of paying customers increased to 2,211 from 1,951 a year ago. Now, before I go over our financial performance, let me quickly provide an update on our Developer Services, revenue classification. Beginning from this quarter, the revenues from Advertisement SaaS and Light-Push services, which help developers grow and monetize their user base, will be separately classified as “Value-Added-Services” under Developer Services. No changes are made to other revenue classifications. Our strategic focus remains to drive the growth of Developer Services and SaaS products. Overtime, we expect the revenue and gross profit contributions from Targeted Marketing to be less and less significant. Onto the financial numbers, our core businesses, including Developer Services and SaaS products continued to see healthy 15% year-over-year revenue growth and 20% year-over-year gross profit growth, despite the impact from the pandemic and lower seasonality. Our strategic transition away from the low margin and high-risk Targeted Marketing business, that we started in the third quarter 2019, has gone very well with Targeted Marketing now only contributing about 12% of our total gross profit. Such transition has reflected in our revenue decline by 45% from RMB230 million in first quarter 2019 to RMB126 million in the current quarter. Our growth of revenue and profitability is no longer dependent upon this legacy Targeted Marketing business. Developer Services once again was the highlight of the quarter with an impressive performance. Developer Services which includes both the Subscription and Value-Added Services recorded a solid 72% revenue growth year-over-year, at the back of increase in both ARPU and customers. For Subscription Services, we continue to see more customers signing up to our Developer Services. New customers improved are not limited to China Pacific Insurance, [Indiscernible] IKEA China and Shanghai [indiscernible] Bank. We also launched a live version of private cloud service catering to customers who need our private cloud set up across their entity. Subscription revenue grew by 37% year-over-year, primarily driven by an increase in the number of customer by 45%. In Q1 2020, we saw more customers signing up to our fee-based JVerification services. They include, but are not limited to [Indiscernible]. Cumulatively, we now have more than 2,000 apps using the services with aggregate DAU existing RMB130 million. The growing demand by advertisers to use our JVerification product along with JPush have contributed to the continued growth in this segment. Value-Added Services which improved revenue from Advertisement SaaS and Light-Push Services which we developed also during the same period last year grew strongly. Market adoption for our Value-Added Services has exceeded our expectations. The average monthly revenue from Value-Added Services was approximately RMB2.1 million in the first quarter of 2020. This has since doubled in April, and we expect the strong revenue growth momentum to continue into Q2. Key customers of our Light-Push Services in the quarter include [Indiscernible] and AliPay. Next, as we transition away from Targeted Marketing business , revenue from this segment were down 59% year-over-year and now accounts for only 51% of total revenue, compared with 81% a year ago. Despite accounting for 51% of revenue, margin contribution from this business account for only about 12% of our total gross profit. As we mentioned in previous quarter\s earnings call, this is a business we want to transition away from. This coronavirus outbreak accelerated this transition. We expect both of our revenue and margin contribution from the Targeted Marketing business to further decline in coming quarters. Now I will turn the call to Fei, who will discuss the Q1 performance of three business lines within SaaS products in more details.