Complex sentence: The border control point (BCP) is needed to relieve the heavily used points (like Lo Wu Control Point) in the western border area, and is to be built between Lo Wu Control Point and Sha Tau Kok Control Point.
Split into simpler sentences: The border control point (BCP) is needed to relieve the heavily used points (like Lo Wu Control Point) in western border area. This control point would be built between Lo Wu Control Point and Sha Tau Kok Control Point.