1, school collective account: after graduation, the school will generally move, otherwise the personnel procedures such as files will be very troublesome in the future. So it's useless after college. The validity period is 3 to 4 years.

2. The collective registered permanent residence of an enterprise can generally be linked when it is on the job, and some units can continue to link it after leaving the company. However, collective households in the talent market are required to move out if they get married.