Fa Ngum again led Lan Xang to war in the 1360s against Sukhothai, in which Lan Xang was victorious in defense of their territory but gave the competing court factions and the war weary population a justification to depose Fa Ngum in favor of his son Oun Huean. In 1371, Oun Huean was crowned as King Samsenthai (King of 300,000 Tai) a carefully chosen name for the Lao-Khmer prince, which showed preference for the Lao-tai population he governed over the Khmer factions at court. Samenthai consolidated the gains of his father, and fought back Lanna in Chiang Saen during the 1390s. In 1402 he received formal recognition for Lan Xang from the Ming Empire in China.^[22] In 1416, at the age of sixty, Samsenthai died and was succeeded by his song Lan Kham Daeng. The Viet Chronicles record that during the reign of Lan Kham Daeng in 1421 the Lam Sơn Uprising took place under Lê Lợi against the Ming, and sought Lan Xang's assistance. An army of 30,000 with 100 elephant cavalry was dispatched, but instead sided with the Chinese.^[23]