In an unprecedented Chinese New Year marketing blitz, Alibaba Group Holding, Baidu, ByteDance and Tencent Holdings spent an estimated 8 billion yuan (US$1.1 billion) to turn their artificial intelligence assistants into household names, according to Morgan Stanley. Now the dust is settling. A week after the holiday ended, early data offers a first glimpse into how China’s AI landscape is evolving and which players gained lasting traction from the spending spree. Morgan Stanley said all platforms...