The Never-ending Radio Wave Episode IV Smoke on the Ground of Li Xia

This is the password for He Lanfen's safe. Ask her to inform the bank to change the password to 4749. So the enemy won't suspect. As a result, Helanfen left that range. But it's still in the bookcase in the study. Helanfen saw it. It can be seen that things are still cautious. This is also the coolness that agents should have.