The Shanghai Composite slipped 0.4% to around 8,360, while the Shenzhen Component fell 0.7% to 12,740 on Tuesday, with mainland stocks ending a three-day winning streak as investors booked profits. Traders also kept an eye on the Shanghai Cooperation Organization summit in Tianjin, where China is seeking to cast itself as a global mediator amid persistent trade frictions and geopolitical tensions. Beijing also called for deeper collaboration on artificial intelligence. Meanwhile, a private survey released Monday showed China’s factory activity returned to growth in August, defying expectations of further weakness as both new orders and export demand improved. On the corporate front, notable decliners included China Northern Rare Earth (-2.6%), East Money (-1.6%), Suzhou TFC (-3.9%), Shanghai Stonehill (-4.4%) and Lingyi iTech (-7%).