SHANGHAI : China Mobile Ltd will start trading in Shanghai on Wednesday after raising 48.7 billion yuan ($7.7 billion) in China's biggest public share offering in a decade. China Mobile's Shanghai debut will be closely watched as an increasing number of companies including BeiGene Ltd have fallen below their offering prices on debut in China. The world's largest mobile network operator by total subscribers, China Mobile sold 845.7 million shares at 57.58 yuan ($9.06) each in Shanghai, the company said in an exchange filing on Tuesday announcing the debut date. The company's Hong Kong-listed shares ended at HK$47.1 ($6.04) on...