BEIJING, March 4 : The head of Alibaba Group's Qwen artificial intelligence model division, Lin Junyang, said on Wednesday he would be stepping down from his role, becoming the third senior Qwen executive to depart this year. "Bye my beloved Qwen," Lin wrote in a post on X, without providing further explanation. Yu Bowen, who headed post-training for Qwen, also resigned on Wednesday, Chinese media outlet LatePost reported. That follows the departure of Hui Binyuan, a staff research scientist