该国宣布：弃用美元！人民币直接付款！！

Group 1 - The core point of the article is that Russia and China have established a reliable bilateral settlement system, primarily using the ruble and yuan for trade transactions [2][3]. - As of now, 99.1% of bilateral trade settlements between Russia and China are conducted in their respective currencies, an increase from the previously reported range of 90% to 95% [3]. - The bilateral trade volume between Russia and China is expected to exceed $200 billion by 2025, potentially reaching slightly above $220 billion, despite a current year-on-year decline of 8.7% [4]. Group 2 - Russia is China's largest supplier of oil and natural gas, and both countries are negotiating the details of a new gas pipeline through Mongolia to ensure long-term gas supply for Chinese consumers [4]. - The mutual visa exemption between Russia and China has significantly boosted tourism and people-to-people exchanges, with a notable increase in the number of Chinese students studying in Russia [6]. - The number of visa applications for Chinese citizens traveling to Russia for study purposes has increased by 25% year-on-year, indicating strong educational ties and a commitment to cultural cooperation [6].