Which temple should the master go to to study in Putuo Mountain in Ningbo?

Mount Putuo is not in Ningbo, but in shenjiamen, Zhoushan.

There is a Buddha Sakyamuni Buddha relic in Asoka Temple in Ningbo. If you have the opportunity to go there to worship, it will be a great victory. In addition, Huiri Temple in Ningbo, Abbot Temple of Master Chuan Xi, Tiantong Temple and Qita Temple in Ningbo are all very good.

It doesn't matter which temple you are in. You should study hard while pursuing your studies. If you only pin your hopes on the temple, Buddha and Bodhisattva can't help you.