The Kowloon-Canton Railway (KCR) is a major railway line in Hong Kong that connects the urban area of Kowloon with the Canton region in mainland China. It was first opened in 1910 and has since undergone several upgrades and expansions to improve service and capacity. The KCR is now part of the MTR Corporation and serves both passenger and freight transport. It plays a crucial role in facilitating travel between Hong Kong and Guangdong Province, making it an important link for trade and tourism in the region.