The closure of the Paleo-Tethys Ocean lead to the collisional amalgamation of the various blocks including South China, Indochina and North China blocks, which results in the formation of the Qinling and Ailaoshan orogenic belts. But the tectonic evolution of the two orogenic belts remains highly debated during the Triassic. The eastern Sichuan Basin, preserving the complete Triassic depositional successions, offers crucial insight into the tectonic evolution of the two orogenic belts in this pe