Yes, Sean let me explain in more detail, to add on top of Mr. Yang's comments. So for the -- as China hospital is a for profit hospital, so we have a sales pricing power within the range. For example, so for some of the medicines, we can charge higher than the government guidance plan, that is [right], and then those will be the self-payment items, and the patients will pay out of the pocket on their own. So that's -- so sometimes you can see some minor fluctuation in our gross margin or relating to the medicine expense. And to answer your first question about the general trend of the gross margin, and whether China hospital is going to have the gross margin trending up, as we are a special hospital, especially with the focus on oncology and some of the other (inaudible). So first, for the second quarter, our gross margin for the hospital is 16.9%, and for the first quarter of the year, is 10.5%, so we see an improvement of 640 basis points quarter-over-quarter. One of the main factors of this is seasonality, because our seasonal -- and if you look at the operating metric of the hospital, in terms of debt occupancy and the average stay of patients, and also the number of patients, in-patient, outpatient, you can see that the first quarter is usually the slowest quarter during the year. And so that's why -- and most of the expenses, especially relating to the inpatient, outpatient services are fixed costs. So that's why usually in the first quarter, you see lower gross margin. Then as cost (inaudible) capacity gets more fully utilized. So especially, in terms of outpatient services, you can see that the percentage of revenue for outpatients in the second quarter has increased significantly over the first quarter. So usually, the inpatient services has like a breakeven point, once we reach -- because really the capacity is there, and no matter how many patients and outpatients visit the hospital, we usually incur the same amount of expense. So in the same quarter, as the outpatient number increases, so we start to see -- the outpatient services starts to generate a healthy gross profit for us. So that is another reason why we see an improvement of gross margin in the hospital. So in terms of the long term trend, we believe that the China hospital's gross margin should stay around 15% to 20%, and now we will keep a close eye on the profitability, so you can use 15% to 17% as the average for the near future. Also, as China hospital centers is focused on departments -- the profitable departments such as oncology, such as orthopedics. So you will see that gross margin will improve. But that's usually -- it's a long term process. So hope that answers your question.