Construction of a long-awaited Thai-Chinese railway line that will link Thailand and China through Laos has finally got underway in the northeast Thai province of Nakhon Ratchasima, but the much vaunted and long overdue project still has a long way to go. The first phase – a 250 kilometer high-speed rail line linking Bangkok to Nakhon Ratchasima — is not expected to be operational until 2021. The entire line, linking the Thai capital with Nong Khai near the Laos border, will stretch 873 kilometers.