Okay. Yes. Howard, nice to meet you online. So I will answer the first question first. And then the second one, I can ask – answer briefly and then Jiandong give you breakdown. For enrollment, in fact, even during COVID-19 pandemic when offline centers were closed, we actually engaged actively online to do online student acquisition, to set up online demo. So the student acquisition never really stopped. But you can imagine the effectiveness of those online student acquisition is low. Therefore, you're right, when Shijazhuang, Beijing offline centers closed, the ability to enroll new students is not as strong as we like. However, for the third quarter, you can see that the student enrollment in other cities, Shanghai, Shijazhuang and those are actually very strong compared with last year. It's all in positive territory. Shijazhuang, for example, we actually see more than 30%, 40% growth year-over-year. And for Beijing and Shijazhuang, even with a majority of the quarter, the centers closed, we're still are able to acquire new students, but slightly lower than last year because Beijing is the biggest contributor. So when Beijing still not fully recovered. Our third quarter enrollment altogether, is still down from last year. However, in October, all the learning centers are opened. We actually see very strong momentum nationwide. So every city from Beijing to Shanghai, Guangzhou, Shijazhuang, all the enrollments in 2020 October aggregate the SOX, we see more than 40% of enrollment growth year-over-year. You know that October is not a high season, September was. So we actually are very encouraged to see this number. And we believe the fourth quarter, overall, will have a much stronger enrollment vis-à-vis last year. This is also a measure that we've take into catch up on student enrollment to really increase our market share when other suppliers are actually under weather. So as Jiandong mentioned, strong demand, a fewer providers to compete and so that's the overall enrollment. On student acquisition costs, I think -- I don't know whether we disclosed in such detail, but for the offline cost, we actually see a major decline quarter-over-quarter. It's about like a 20%, 30% decline for the offline. I think this really contribute to higher conversion rate. And Jiandong, you can give more information to Howard?