The marriage alliance began two decades of peace between the two empires. In 647, for when Taizong sent a force under the command of the Göktürk prince Ashina Shö-eul on a punitive expedition against the state of Kucha under its new king Hari Pushpa, after his predecessor had refused to pay tribute in protest at China's interventionist policy, Tibetan troops were requisitioned. Moreover, in 648, when the Tang emissary Wang Xuance became stuck in political turmoil of an Indian state, he sought aid from both Tibet and Nepal and was assisted by both in defeating one of the factions in 649.