 If you look at the ByteDance, look at the particular app which is literally called today's headline. We firmly believe that if our news to be headline must be the news that to you is most important. So what we have developed is a system that knows you and the user and also knows what happened in the world. So basically connect the information and the news with a particular person. So traditionally you will think about this as a recommendation system that will categorize people into different categories and news into different categories. But we didn't do that. What exactly we have been doing is we know you so well we have your own profile or model or we know at this moment at this particular location what you are interested in then we bring in the news, the video and pictures that you most likely will be interested in and push to you. So in the sense it's a search engine but without you doing a search it knows your taste and knows what you need at this particular moment at this particular place. So the engine behind this magic is actually AI engine. It learns about you, learns what happens in the world. So that's what it excites me. I would say just like the technology development in the past in all the major industrial revolutions, I think those are issues we need to address. And that's why we have this ITU, we have this United Nations conference on AI for good and for sustainable development. As a technologist I'm always optimistic and I believe those technologies actually benefit that brought in are much bigger than the fact. And all the fact that could bring in are addressable and we took a proactive approach. And if you look at the last 40 years, the technology wave, each new wave actually come faster and also have bigger impact. And often as we have seen in the last 20 years is internet involved is in particular also is mobile internet involves. Government and regulatory agencies are often slower in reacting but enterprises and companies they are the first to fill the change and to adopt to the change and to develop the new technology and apply the new technology. So in establishing rules, standard regulations to counter potential side effect, instead of just looking at government or international agencies, I would say enterprises, private enterprises actually play a big role here. So that requires companies to take their own social responsibility and that requires we build up trust and we should be more open and to collaborate. In this particular case I would say that in particular the world should open to Chinese entrepreneurs, Chinese startups. If you look at the last five years on the mobile internet development, I would say it is so clear that in this world there are two leaders or two centers of innovation. One is Office of the US, another one is actually China. China definitely needs from the application technology angle. If you look at WeChat, if you look at RDP, if you look at the BiDance application, today's headline, personalized news feed. We're not talking about China following other parties, other places, other companies, actually China are leading. And it's not just leading because a government initiative is not. It's leading because the entrepreneurs, especially young generation of entrepreneurs, they have the vision, they are open minded, they like to collaborate with their partners or even competitors worldwide. And from day one they think that particular technology, particular app, particular services, their building will benefit not only users in China but also worldwide. The company I work with, BiDance, like the particular app, today's headline, we have over 600 million users. A large part of it is actually overseas in India, in Indonesia, in the US. So those entrepreneurs, those young, energetic, visionary engineers, I think we should work with them to define the future of AI or any other new technology and to ensure those new technology will bring in benefit instead of side effect to the society. So those are the points I would like to bring in to this UN conference on AI for good. And that actually will be a core part of my presentation and also panel discussion tomorrow.