may 31, 1523 - Following the Battle of Sincouwaan at sea between the ships of the Chinese Empire and the Kingdom of Portugal, the Malay ambassador to China reluctantly departs from Guangzhou to present letters to the Portuguese governors of the occupied Malacca Sultanate, demanding the restoration of the deposed Sultan. Though fearing execution by the Portuguese, the messengers are allowed to leave. They return in September with a plea for help from the Malay Sultan, whose territory is under attack from the Europeans