Wang Yi spoke during an official visit to strengthen political and economic relations, which have become increasingly warm in recent years as China has sought to spread its influence and Thailand's military government has loosened ties with the United States, its traditional ally.
The joint Thai-Chinese plan for a new 179 billion baht (USD 5.3 billion) railway from Bangkok to the northeast has been repeatedly delayed over differences about financing and other issues.
Last month, however, Thai Prime Minister Prayuth Chan- ocha issued a special order to expedite construction by decreeing that certain regulations could be ignored, including labor rules, so that Chinese engineers could work on the project.
Wang and Thai Foreign Minister Don Pramudwinai spoke in a joint news briefing of their two countries' good relations and major long-term projects. Wang met earlier with Prime Minister Prayuth.
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"We want to hasten the China and Thailand railway project, and make sure that construction can start immediately, which would allow Thailand to connect to the large market in China and become a hub of regional connectivity," Wang said.
Don called the rail project an example of ancient dreams coming closer to reality thanks Chinese efforts.
Thai deputy government spokesman Weerachon Sukhondhapatipak told reporters that Prayuth "is determined to improve the already good relationship with China." He said Thailand is ready to strategically cooperate with China in all aspects to benefit both nations.
He said their development plans benefit both countries, giving the rail project as an example of a Chinese plan that meshes with Thailand's intentions to upgrade its technological abilities and develop its Eastern Seaboard.