Chinese tech giants including Tencent Holdings, Alibaba Group Holding, Meituan, and Xiaomi have launched aggressive share buy-back programmes to revive investor confidence amid continuing scepticism towards the sector, while analysts suggest that a bottoming out could soon be in sight.Plagued by stock prices that have hit alarming lows in recent trading cycles, the tech heavyweights are leaning on massive share repurchase programmes and high-profile appearances by company leaders to boost...