Orkut were other social networking sites including Myspace and Facebook. Ning was a more direct competitor, as it allowed for the creation of social networks similar to Orkut's "communities". An Orkut user was also able to add videos to their profile from either YouTube or Google Video with the additional option of creating either restricted or unrestricted polls for polling a community of users. There was at one point an option to integrate GTalk with Orkut, enabling chat and file sharing. Similar to Facebook, users could also use a "like" button to share interests with friends. Users could also change their
Xing Qiyi on bufotoxins at Wieland's laboratory. In 1937, Xing returned to China. He moved to Kunming since eastern China was occupied by Japanese invaders. There, he spent some efforts on the refining of Quinine. Then Xing joined the New Fourth Army as a teacher in its military medical school. Moreover, he assisted the army to product medicine. In 1946, Xing went back to Beijing and accepted an appointment as a professor at Peking University. In 1950s, Xing designed a new method to synthesize the chloramphenicol. During 1964–65, Xing participated in the total synthesis of bovine insulin project, co-operating with Shanghai Institutes