BEIJING (Reuters) -Chinese President Xi Jinping and Indian Prime Minister Narendra Modi have begun a bilateral meeting in the northern Chinese port city of Tianjin, state media outlet Xinhua said on Sunday. Modi is in China for the first time in seven years to attend a two-day meeting of the Shanghai Cooperation Organisation, where Russian President Vladimir Putin and leaders from Central Asia, Southeast Asia, South Asia, and the Middle East will gather with Xi in a powerful show of Global South solidarity. (Reporting by Liz Lee and Shi Bu; Editing by Michael Perry)