China-Cambodia high-speed rail has not been opened. As of June 4th, 2022, there was no news about the high-speed train from China to Cambodia. China-Cambodia high-speed rail has not been opened. Therefore, high-speed rail will probably be built in the future, because Cambodia is a friendly country of China. At present, both sides are interested in strengthening cooperation and building high-speed rail. China and Cambodia have already opened expressways, and it is believed that high-speed rail will be opened soon.