The news that Shanghai Worldbest Pharmaceutical Co inflated earnings and sales between 2001 and 2004 has marred the bullish stock market and cautioned investors in Chinese mainland-listed shares.Shanghai Worldbest, a medicine unit of China's State-owned textile and pharmaceutical conglomerate, said in a statement that it used inaccurate data to inflate profit by 65.11 million yuan (US$8.1 million) from 2001 to 2004.