China's foreign exchange reserves, the world's largest, fell by $87.2 billion (€80.6 billion) in November to $3.44 trillion, central bank data has showed, the lowest level since February 2013 and the third largest monthly drop on record.
Analysts blamed the fall partly the dollar's rally during November, which reduced the value of non-dollar reserves, and partly on China's central bank selling dollars to support the yuan.
The onshore yuan is down over 3% so far this year, and remains under pressure as investors expect US interest rates to be increased for the first time in around a decade later this month.
The fall in foreign exchange reserves was the biggest since a record monthly drop of $93.9 billion in August. China's FX reserves have declined for the last five quarters and posted a record quarterly fall in the third quarter.
"The pick-up in capital outflows appears to have been predominately driven by increased expectations for renminbi (yuan) depreciation," Julian Evans-Pritchard at Capital Economics said in a note.
"A rise in offshore interest rates due to the increased likelihood of a December Fed rate hike will also have added to outflow pressures."
China's surprise devaluation of the yuan on 11 August fueled a wave of capital outflows on fears the world's second-largest economy might be slowing more sharply than thought, and on worries of a possible interest rate rise by the US Federal Reserve.
The yuan's depreciation has been even more marked in the offshore market, where it has lost over 4% this year.
Trading at 6.47 per yuan dollar, the offshore rate is at its widest discount to the onshore closing rate since September, indicating enduring bearishness.
Zhou Hao, economist at Commerzbank in Singapore, wrote in a research note that the Peoples Bank of China has switched strategies to manage a softening to the yuan-dollar rate instead of trying to halt it completely.
"It seems that China's central bank has changed its strategy in market intervention," wrote Mr Zhou.
"Recall what happened in August and September: USD-CNY was stable despite soaring trading volumes, as the central bank sold USD aggressively to safeguard its currency.
"Afterwards, USD-CNY trading volume illustrates a clear downward trend since September, and CNY gradually weakens in tandem. The difference shows that a 'managed depreciation' in CNY is acceptable from Chinese authorities' perspective."
For its part the central bank has repeatedly said it sees no reason for the currency to depreciate further.
The value of China's gold reserves stood at $59.52 billion at the end of November, down from $63.26 billion at the end of October, the People's Bank of China (PBOC) said on its website.
China's International Monetary Fund (IMF) reserve position was at $4.60 billion, down from $4.64 billion the previous month. It held $10.18 billion of IMF Special Drawing Rights at the end of last month, compared with $10.36 billion at the end of October.
The central bank in July shifted to reporting its foreign exchange reserves on a monthly basis after adopting the IMF's Special Data Dissemination Standard (SDDS). The bank had previously released the data on a quarterly basis.
On 30 November the IMF admitted China's yuan into its benchmark currency basket, in a victory for Beijing's campaign for recognition as a global economic power, and the PBOC's vice governor Yi Gang said he expected the inclusion would make the yuan more stable.