After Lam Tin station, the line travels through a tunnel in a hill and emerges above ground level at Yau Tong (although the line is completely covered at this point), where it meets with the Tseung Kwan O line. Both the Kwun Tong and Tseung Kwan O lines pass beneath the Tseung Kwan O cemetery in tunnel before entering Tseung Kwan O in an northeasterly direction at Tiu Keng Leng, where the Kwun Tong line terminates. Yau Tong and Tiu Keng Leng stations provide cross-platform interchanges in the same manner as Mong Kok and Prince Edward.