China’s richest man lashed out at two of the country’s biggest tech giants for fanning online vitriol targeting him earlier this year and instigating a price war that wiped out tens of billions of market value for his bottled-water empire.At an event in Jiangxi province earlier this month, Zhong Shanshan, the founder of Nongfu Spring Co., accused online budget shopping platform PDD Holdings Inc. of disrupting a pricing system it has worked hard to uphold. “The price system like Pinduoduo’s does ...