Microsoft said it will shut down the Chinese version of professional social networking site LinkedIn. This event marks the end of the work of the last major American social network, which officially operated in the Middle Kingdom. LinkedIn on Thursday said it made this decision after it encountered “With an overly complex operating environment and unreasonably high demands from the Chinese authorities”. In March, LinkedIn said it was temporarily suspending new account registrations in China as it might not comply with current Chinese legal requirements. Around the same time, the Chinese regulator demanded that LinkedIn tighten its content moderation and…