 From my own perspective, I think security is very crucial for all the industry. It's a basic, it's a basement for setting up trust among the business partners, among private sectors and public sectors. And the final goal for security is to earn the confidence of the consumers so that we can make the whole industry going forward. Alibaba is doing a lot of business on the Internet and we believe that in the future all the companies will follow our way that running their business on the Internet. That will make the whole ecosystem very complicated. Of course, it can also bring a lot of benefits too. In this very complicated ecosystem, how can we protect data not only inside your organization but also on the whole circle of the ecosystem? It's a big challenge. So we are trying to make our practice or experience into kind of data security maturity model and make it to international standards so that other organizations can use it to evaluate their own capability on data security. Yes, Alibaba actually invested in quantum communication research in China. But I want to say that there is never a silver bullet on security. It's a kind of counter-measure between people. So counter-technology can be used for enhanced security but counter-computing might also break security. So it's a very interesting cutting-edge technology. We should look at it very carefully. Yes, actually people are concerning privacy not only on AR, VR, AI, etc. People are concerning privacy on everything today because every device is collecting data today and every company are using data today. But from my own opinion, I think the most important is not what kind of information those applications or devices are collecting but how the data are used by the companies who owns the data. How can they protect it from abuse, misuse, or protect it from stolen? When I say trust, I mean if you are a service provider, no matter you are providing a product or providing a service or providing anything else, can you make other people to evaluate the situation of security in your company or in your products? So at least that will involve several very important elements. One is the standards. Is there any standard to evaluate your security? The second one is that standard can be evaluated by the third party and when people believe the standard and believe the result from the third party, then this organization or this product might earn trust from the customers.