Chinese revenue from digital services sold abroad is soaring as tech champions from ByteDance Ltd. to Tencent Holdings Ltd. ramp up their overseas push in live streaming, e-commerce and artificial intelligence.The trade surplus from digital services, which encompasses a wide scope of businesses from telecom operations to cloud computing, more than doubled in 2025 to a record $33 billion, data from the State Administration of Foreign Exchange show. The category of telecom, computer and informatio...