Does it have anything to do with applying for low-rent housing and paying insurance for hanging units?

It depends on the conditions for applying for low-rent housing. Many conditions need to be submitted, such as social security or social security, which has nothing to do with applying for low-rent housing. You can look at the conditions for applying for low-rent housing.

Low-rent housing means that the government provides social security housing to families who meet the minimum living standard of urban residents and have housing difficulties by means of rent subsidies or physical distribution. The distribution form of low-rent housing is mainly rent subsidy, supplemented by physical distribution of rent and rent reduction and exemption.