Complex sentence: As a result, passenger services to Shengxing Station ceased in 1998 when the new section of the Mountain Line opened while the previous segment of the Mountain Line containing Shengxing Station became known as the "Old Mountain Line".
Split into simpler sentences: As a result, passenger services to Shengxing Station ceased in 1998 when the new section of the Mountain Line opened. The previous segment of the Mountain Line became known as the "Old Mountain Line".