The rapid adoption of cryptocurrencies like Bitcoin (BTC) poses a major challenge for the traditional financial system, an executive at the Chinese central bank has warned. Wen Xinxiang, director of the payment and settlement department at the People’s Bank of China (PBoC), has expressed concerns over the growing popularity of cryptocurrencies and fiat-pegged stablecoins. Pointing to Bitcoin’s market value now surpassing $800 billion and the total stablecoin market capitalization exceeding $120 billion, Wen outlined major risks associated with the crypto market at a payment and settlement forum on Friday, the Shanghai Securities Journal reported.