HONG KONG -- China's food delivery war rages on as the three big platforms, Alibaba Group, Meituan and JD.com, vie to become the ultimate gateway for consumer spending in Asia's largest economy.

Though I tried to play the “pick and choose” act lest the vegetable vendor considered me a novice, I admit I haven’t been able to please my wife. “You’ve been overcharged for stale vegetables once ...