Three months after his eighth visit to China, Tim Cook, CEO of Apple Inc, was in Beijing again on Monday.

"Nihao, Beijing! It's great to be back. Started my trip today by visiting with the incomparable Guo Pei - such exquisite care and craftsmanship in her work. Thrilled to see how her team is using iPad Pro as Guo Pei designs her new collection," Cook posted his greeting on Twitter-like Sina Weibo on Monday night and revealed his visit to Chinese fashion designer Guo Pei.

Guo Pei is a rising Chinese designer star, famous for her wedding dress series and her success at the Met Gala in New York last May.