1684 in China

Incumbents

• Kangxi Emperor

Events

• The Kangxi Emperor lifts the haijin prohibition on sea trade, allowing foreigners to enter Chinese ports in 1684
• The amount of copper in the alloys if cash coins was reduced from 70% to 60% all while the standard weight was lowered to 1 qián again, while the central government's mints in Beijing started producing cash coins with a weight of 0.7 qián.
• The first mention of chili peppers in local gazettes in Hunan. They would later become a staple of Hunanese cuisine.
• Sino-Russian border conflicts

Deaths

• Yinju, 19th son of Kangxi, born through an unnamed Noble Lady, of the Gorolo clan
• Mu'an a Chinese Chan monk who followed his master Yinyuan Longqi to Japan in 1654