Why do Hong Kong people call the subway MTR? Is it short for metro?

Hong Kong people call the subway MTR because the long name of MTR is Mass Transit Railway Limited (MTRC), which was established on October 1, 1979. It was formerly known as Hong Kong Mass Transit Railway Corporation, and was merged with Kowloon-Canton Railway to form MTR (Hong Kong Railway) in the merger of the two railways on December 2, 27. From the opening in 1979 to the merger of the two railways in 27, the subway in Hong Kong was operated by the MTR Corporation Limited (now known as the MTR Corporation Limited) and developed into a 7-route subway with 53 stations. Metro may refer to SHENZHEN METRO CO.,LTD