China central bank's net foreign-exchange sales nearly doubled in November from October amid renewed strength of the U.S. dollar.

The People's Bank of China sold a net 1.18 billion yuan ($169 million) in foreign exchange in November, compared with net sales of CNY598 million in October, according to data released by the central bank on Monday.

The PBOC's foreign-exchange purchase position, which has been declining for 16 straight months, stood at CNY21.234 trillion at the end of November, central bank data showed.

The yuan edged 0.1% higher against the dollar last month after rising 1.4% in October, according to Wind.