China Construction Bank Corp (CCB), the country's second-largest lender by assets, said it plans to assess credit risks and up provisions, just as Bank of China Ltd (BoC) said the same.
Even more directly, Bank of Communications Co Ltd said on Friday it had boosted "provisions to counter the future impact of the pandemic."
As the pandemic batters economies globally, BoC, the most international of China's large state banks, said it would keep guarding against global financial market risks in the second half.
Net interest margins (NIM) - a key gauge of bank profitability - fell at Industrial and Commercial Bank of China (ICBC),, the world's largest commercial lender by assets, BoCom, CCB and AgBank.