Sure, Mike. So if you look at Pizza Hut restaurant margin, it was up almost 4 percentage point year-over-year. So again, let me go through line by line. So in terms of food and paper cost, our investment in promotional activities and value campaigns, such as Scream Wednesday, has been very critical component of our strategy to drive traffic and all the value for money to customers. So with a step up in value promotion in this quarter, so we are very pleased to see that Pizza Hut restore positive same-store sales growth and continue to see significant traffic growth. But albeit that put some pressure on our restaurant margin for the short-term. And the sales leverage and commodity deflation have to offset the impact of the value promotion. So on labor costs, labor inflation was mid-single digit year-over-year, and we have significant improvement in labor productivity during the quarter. But some of these is ongoing, a significant portion is related to better matching of labor and sales during the critical Chinese New Year period, which I talked about earlier during the prepared remarks. So - and on occupancy and other costs, there are few components in this line item, but the improvement mainly came from a combination of savings in utility, from lower utility price, and the efficiency management, and also less depreciate expense from all the stores impairment we took in prior years. So in addition, I want to point out one point before we took back control of the last mile delivery in the later part of 2018, the rider costs were amounts we paid to aggregators, and they were record under occupancy and other costs, for example, in Q1 last year. But with the delivery being handled by own dedicated riders now, the rider costs have been included under cost of labor, for example, in this quarter. Looking forward for the remainder of the year, over at a high level we will is continue to drive labor productivity, and improve in-store efficiency, reduce restaurant operating costs, and manage and tighten cost of sales to offset all the value promotions that will take and also wage inflation. However, due to the one-off items I just talked about, for example, the labor productivity, so keep in mind we have a very low base last year. We talked about that extensively on Q1 last year's earnings call. So the year-over-year improvement is expected to taper off. And also the utility savings that we talk about, we expect that impact to reduce in the second half of the year. So also we are adjusting the business model, and we have a very clear and deliberate strategy in the short-term to drive traffic through investment in promotions. So I just want to reiterate at this point, our strategy is to restore traffic and sales, followed by profit. But in the longer term as the revitalization takes hold, we are very confident in restoring the margin back to the revitalization level.