Complex sentence: The Tsuen Wan Line was one of the original lines of the Hong Kong Underground network, thus the initial plan was a bit different from the realised line, especially the names and the construction characteristics of the New Territories section.
Split into simpler sentences: The Tsuen Wan Line was one of the original lines of the Hong Kong Underground network. The initial plan for this line is somewhat different to what currently exists; especially in the names and the construction characteristics of the New Territories section.