The People's Bank of China may absorb some US$20 billion in cash as part of ongoing efforts to keep the economy from overheating, the Wall Street Journal reported. The bank said Friday that in a mopping-up exercise, it plans to sell US$20.45 billion in one-year bills today. The bills, set to yield 2.7961%, would be placed with commercial banks, reducing the amount of money they have available to lend. The Shanghai Composite Index was near record highs last week but it went down 2.9% after the meeting Friday. Analysts said stock prices could fall further this week.