Does the subject want to ask "what kind of documents can domestic individuals hold to handle foreign exchange business"? Domestic individuals can handle foreign exchange business with their ID cards and passports.

1. ID card: China residents holding ID cards only need to provide valid ID cards when handling foreign exchange transactions such as foreign exchange purchase and remittance at banks or foreign exchange bureaus.

2. Passport: China citizens with valid passports can handle foreign exchange business with their passports.