JD.com Inc. founder Richard Liu vowed to speed an overseas foray and compete with Meituan in new arenas from food delivery to travel, describing his boldest attempt yet to revive an online retailer that’s languished since a 2020 government crackdown.The past half-decade was the darkest period for his company, Liu said during a rare news conference at JD’s Beijing headquarters Tuesday. The company lost its way, the 52-year-old tech mogul said, at a time when rivals like PDD Holdings Inc. surged a...