Tshering Gyamtsho was succeeded by his spiritual heir Lam Jangchub
Gyeltshen who renovated and extended the present-day lhakhang just
below the Rigsum Goenpa monastery with the unique mural paintings
of the Zepa Chuni or the twelve depictions of the life and deeds
of Lord Buddha which can still be seen today. The lhakhang was named
was succeeded by his nephew Lam Ngawang Loday who was ordained as
the 3rd abbot of Rigsum goenpa monastery by His Holiness Yonten Thaye,
the 13th Je Khenpo (1771-1775), who visited the region enroute to Tsari
Rongkor (mountain pilgrimage) in Arunachal Pradesh, India.
Ngawang Loday constructed the bigger lhakhang just above the
lower lhakhang and installed valuable Ku-Sung-Thukten (sacred artifacts
representing the body, mind and speech of the Lord Buddha) including the
statue of Jowo Shacha Muni, 100 volumes of Kanjur, Gyalse Tenzin
Rabgay's arts and crafts, and the enlightening stupas of Lord Buddha.