@Bolanghoy 9 June 2021 more from that month

On this day June 9, China leases Hong Kong's new territories to the United Kingdom for 99 years by signing the Convention for the Extension of Hong Kong Territory. The contract was signed to give the British full jurisdiction of the newly acquired land that was necessary to ensure proper military defence of the colony around the island to maintain the balance of power with other European powers in the region. This actually happened June 9, 1898…