Lancang–Gengma earthquakes: At least 730 are killed after two powerful earthquakes rock the China–Myanmar border in Yunnan Province.

On 6 November 1988, two earthquakes struck Lancang and Gengma counties, Yunnan, near the China–Myanmar border. These earthquakes measured moment magnitude (Mw) 7.0 and 6.9, respectively, spaced 12 minutes apart. These earthquakes were assigned a maximum China seismic intensity of IX and X, respectively. Between 748 and 939 people were killed; more than 7,700 were injured. Both earthquakes caused damage and economic losses estimated at CN¥ 2.05 billion. Moderately large aftershocks continued to rock the region, causing additional casualties and damage.