Okay. Let me translate this to Mr. Hu, and he will take the question. Okay. I will translate the first. So first, we are not saying that we are going to change our business model. We just added new business to our existing platform. For example, previously, we were OEM provider. We didn't manage to operate the AAVs up by ourselves. But we understand that we -- now, we are going to operate the AAVs or platforms by ourselves. It seems that we are changing from a pure airline manufacturing company into airline operating company. So the 2 business models are integrated. And second, we realized that the value for EHang is that we are providing the individual a customized transportation mobility services to each individuals. For example, during the COVID-19, in many countries, the public transportation has been suspended due to the outbreak of the virus. But the individual mobility transportation becomes important. So EHang is providing the mobility service to individual by these AAVs. So this definitely shows the value of our company, of our products. So far, we have built five command control centers in China. And meanwhile, we are building a new one in Europe, in Azerbaijan specifically. So given these command control centers, we are able to manage the operation of all our AAVs very well, very smoothly. So all these command control centers actually help to improve the management of all our AAVs, not only into EHang 216 but the other AAVs to be applied in different use cases, such as the highway inspection, the environmental protection, et cetera, and to help realize the smart city management function. So we are going to build more command control centers, not only in China but maybe in Japan, in Korea in future. So all these command control centers formed a good integrated network so that we are able to manage the operation of our AAV as well. And specifically in China, we are completing our infrastructure, including the landing path and the VertiPods, et cetera. So with more of such infrastructure being built, we are going to build a more complete network and so that the individual customers or passengers can use our service more conveniently. So in the future, we are going to see more and more of our command control centers being built in different cities. And so this will not only improve the operation of our EHang 216 passenger AAV, but also can help to improve the smart city management for the local government and which may generate more revenues for us. So actually, if you look at our business model and with the revenue mix, so there is nothing to be reduced from our previous structure. We didn't cut any of our existing services, but we are going to add this self-operation service. Okay. That's all Mr. Hu's answer.