As for the lease contract signed by a company in Hong Kong, the lease time is as long as 50 years. Whether the contract is valid or not needs to be judged according to the specific circumstances. If the contract is signed before the implementation of the new regulations, then the contract is still valid; If it is signed after the implementation of the new regulations, the part that has exceeded 20 years may be invalid. In addition, if the contract is suspected of violating the Provisional Regulations of the People's Republic of China on the Assignment and Transfer of Urban State-owned Land Use Rights or the Administrative Measures for the Circulation of Collective Construction Land Use Rights in Guangdong Province, the contract may be deemed invalid.
Generally speaking, when leasing land or houses in Hong Kong, you need to abide by relevant laws and regulations to ensure that the lease period is legal and valid.