A Chinese bank employee counts 100-yuan notes and U.S. dollar bills at a bank counter in Nantong in China's eastern Jiangsu province on August 6, 2019.

China is heavily exposed to the U.S. dollar, but now, with the risk of "decoupling," Beijing is silently diversifying its reserves to reduce its dependence on the world's largest reserve currency, analysts say.

Ongoing trade tensions with the U.S. has "increased the risk of a financial decoupling" between the two largest economies, ANZ Research said in a recent report. The White House reportedly considered some curbs on U.S. investments in China such as delisting Chinese stocks in the U.S.

Beijing will therefore manage its risk by diversifying its foreign exchange reserves into other currencies, ANZ predicted, as well as build up its "shadow reserves."

"Although China still allocates a high share of its FX exchange reserves to the USD ... the pace of diversification into other currencies will likely quicken going forward," ANZ says in the report, adding that the share of the dollar in the country's foreign exchange reserves was estimated to be around 59% as of June.

Although the exact allocation of China's foreign exchange reserves in different currencies isn't known, ANZ told CNBC it believes those would include the British pound, Japanese yen and euro.

Meanwhile, Beijing is gradually reducing its holdings of U.S. Treasurys, which it is heavily invested in — China was the largest foreign holder until June, when it was surpassed by Japan. Since peaking in 2018, China has reduced its holdings by $88 billion in the last 14 months, DBS said in a note.

According to data from the U.S. Treasury department, China held $1.11 trillion of U.S. debt in June.

At the same time, Beijing has been going on a gold buying spree, with its official gold reserves holding at record levels of 1,957.5 tons in October.