China’s factory and services sectors had their best showings in months in May as demand rebounded, surveys showed, fuelling optimism that its economy may be steadying after a weak start to the year. “Exports are picking up and the impact of the ‘mini stimulus’ is gradually being felt,” said Tao Wang, an economist at UBS, referring to recent government measures to revive growth. The survey results augur well for China’s monthly economic data that will be released from June 8, and gave a fillip to Asian stock markets.