A quick word on Baidu's corporate social responsibility. Baidu data centers have obtained more than 400 technology and innovation patents in China and abroad. For example, our Yangquan Cloud Computing Center, the first double 5A energy-saving data center in China, is widely regarded as an industry role model with an annual PUE of 1.09, reaching to a top tier level at global standard, much higher than the average level in China. In 2018, through technology innovation and clean energy adoption, Yangquan Cloud Computing center reduced carbon dioxide emission by 177,000 tons. For more information on Baidu's corporate social responsibility effort, please refer to our newly published CSR report, the website link to which can be found in our earnings release.