No compulsion. Shanghai is currently promoting the installation of elevators in old communities, but it is not mandatory for all communities to install elevators. Specifically, the Shanghai Municipal Government issued the "Implementation Opinions on Promoting Elevator Installation in Old Residential Areas", which stipulates that owners should be encouraged, guided and supported to install elevators in eligible old residential areas, and corresponding policies and financial support should be given. However, for some old communities that cannot install elevators, the government will also provide other solutions, such as installing elevators and transforming stairwells. The policy of Shanghai municipal government is to encourage and support the installation of elevators in old residential areas, but it is not mandatory. Owners can make decisions according to their own needs and economic strength. If they decide to install elevators, they can apply for relevant policies and financial support.