A group of Chinese semiconductor and AI companies has formed an alliance to push the adoption of locally developed processors for artificial intelligence projects, as mainland regulators question Nvidia about any “back door” risks in its H20 chips.Initial members of the Model-Chips Ecosystem Innovation Alliance include Tencent Holdings-backed AI start-up StepFun, Infinigence AI, SiliconFlow, Huawei Technologies’ Ascend computing business unit, MetaX, Biren Technology, Enflame, Iluvatar Corex,...