1. Exclusive-After US curbs, Tencent and small chip designers chase Nvidia's China crown

    By: Yelin Mo and Fanny Potkin By Yelin Mo and Fanny Potkin BEIJING/SINGAPORE (Reuters) - Chinese chip designers including Tencent Holdings are aggressively pitching their AI chips as alternatives to Nvidia's, hoping U.S. export restrictions will prompt clients to switch, said four