(Bloomberg) -- Chinese investors are heading into the earnings season demanding proof that billions in AI spending by tech giants is paying off.Most Read from BloombergAmbani’s Cola War With Coke, Pepsi Spurs Fridge Bonanza in IndiaInside a Year of Chaos and Conflict at Kevin Hart’s Media CompanyMamdani Scraps Property Tax Hike, Counts Second-Home RevenueIran Makes New Offer on Uranium in Response to US, WSJ SaysThat spotlight will fall on Alibaba Group Holding Ltd. and Tencent Holdings Ltd. whe