 A thousand years later, during the reign of the 5th Dalai Lama (1617-82), the palace was turned into a monastery for the Gelug school.The Yumbu Lakhang was heavily damaged and reduced to a single storey during the Cultural revolution but was reconstructed in 1983.As of November 2017 the palace is undergoing $1.5m of restoration works to reinforce its crumbling wooden foundations and cracked walls.