China and Russia are building bridges. The symbolism is intentional
https://edition.cnn.com/2022/06/14/asia/china-russia-blagoveshchensk-heihe-highway-bridge-mic-intl-hnk/index.html
High speed rail was extended to Jiamusi, which is neighboring with Russia. So, there is possibility to extend the rail over Russia. But, current border closure makes it meaningless, because most of the high speed rails in China are passenger dedicated lines.
