I worked in an outsourcing company, bought Chengdu social security, but was sent to work in Shanghai. Am I still eligible to buy a house in Chengdu after two years?

According to the current policy, only if you pay social security continuously in Chengdu in the past two years or one year can you qualify for buying a house. Therefore, if you go to work in other places and Chengdu considers buying a house, you can't pay social security. If you don't want to pay back the social security, you can choose to find a third-party institution to pay for your affiliated unit until you buy a house.