The Shanghai Composite edged up 0.1% to 4,098 on Wednesday, while the Shenzhen Component gained 0.6% to 16,303, with both indexes extending their winning streak to a third consecutive session, largely driven by gains in technology stocks.
The sector extended its advance as investors shrugged off recent concerns over elevated AI-related valuations and focused on upbeat guidance from semiconductor manufacturers.
Chinese tech stocks broadly advanced, including SMIC (0.9%), Shennan Circuit (3.8%), Zhongji Innolight (2.2%), and Eoptolink Technology (1.6%), and NAURA Technology (1.9%).
Meanwhile, a private survey showed that China's Manufacturing PMI edged down to a three-month low of 51.7 in June from 51.8 in May, though it remained slightly above expectations of 51.6.
The data followed stronger-than-expected official figures released on Tuesday, which showed the Manufacturing PMI rising to 50.3 from 50.0, above forecasts of 50.1 amid resilient demand for high-tech exports.