China's Big Five lenders have warned that the foundations of the country’s recovery were “not yet solid”. The warning came amidst the above 3.5% annual net profit growth they have posted this week. China’s Bank of Communications (BoCom) and Bank of China (BoC) both posted just over 5% annual net profit growth. The Agricultural Bank of China (AgBank) and China Construction Bank (CCB) both posted over 7% annual net profit growth. Industrial and Commercial Bank of China (ICBC) came in at 3.5% annual net profit growth. Despite the healthy results, all five warned of global banking turmoil and domestic risks. While all five lenders posted steady or falling non-performing loan ratios, they also logged shrinking net interest margins (NIM), a key gauge of bank profitability.