If you are not sure whether you are required to obtain a visa to visit Hong Kong, please check the HKSAR Government website for more information:

https://www.gov.hk/en/nonresidents/visarequire/general/index.htm

According to Hong Kong Customs and Excise laws, anyone entering Hong Kong in possession of cash and/or valuables worth more than HKD 120,000 is required to make a declaration. For more information, please visit the HKSAR Customs and Excise Department website: https://www.customs.gov.hk/tc/enforcement/cds/index.html