The combined profits of large Chinese industrial firms jumped 24.2% on year in August to 483.17B yuan ($78.94B) as growth accelerated from 11.6% in July.
In January-August, earnings climbed 12.8% to 3.5T yuan.
Private companies led the way as income increased 16.2%, while that of state-owned firms rose 8%.
The profit growth adds to other data indicating that China's economy is improving, although not everybody's convinced.
Shares: China +0.2%, Hong Kong +0.3%.