Beijing pays social security and has no Beijing hukou. Can I buy a house and settle down in Tianjin?

At present, the social security provided by local houses requires that local houses in Beijing need to provide social security for five years in a row, and houses in Tianjin need to provide social security for five years in a row, so you need to provide social security certificates from Tianjin to be eligible to buy a house in Tianjin, but social security in Beijing can't.