A 70 plus-story skyscraper in China’s tech hub of Shenzhen city swayed again on Wednesday, after it inexplicably wobbled and caused 15,000 people to evacuate the day before. No earthquake had been reported in the region, which was only experiencing light winds. The swaying of the 21-year-old building started at approximately 12:31 p.m. local time on Tuesday. Videos circulating on social media showed people running away from the building, with some screaming, holding umbrellas, and looking back over their shoulders. Chinese media reported that all 15,000 evacuees escaped from the building within 90 minutes. Nobody was injured. On Wednesday, some local media reports said the building had started swaying again, although not as dramatically as it had on Tuesday. The building remained closed off for investigators, although the landlord—Shenzhen SEG Co. Ltd.—had allowed shop owners from the major electronics market in first 10 levels of the building to collect their goods. …