Copy of ID card and handwritten signature are both required. A copy of your ID card is proof of your ownership of the account. Moreover, your ID card must correspond to the super identity verification code filled in your account, otherwise it is useless. Handwritten signatures must also be filled in. I just printed my ID card last time and forgot to write my signature. After I sent it, I refused to accept it perfectly, so I wrote my signature and sent it again. It's so depressing.