With a force of sanitary police and medical officers; investigation, quarantine, and imprisonment of lepers was conducted thoroughly from 1934 till the end of colonial governance of Japan.

Although the government built a new hospital building nearby for settling the patients, the proposed demolition of the original compound brought a series of debates and, later, a preservation movement.

[citation needed] Long before the depot construction was initiated, Loshen’s ex-director and history professionals have demanded a large-scale inspection of Losheng’s position as a historical site.

Liu (劉可強) came up with a symbiosis plan, and when the Council for Cultural Affairs has deemed the sanatorium a historical spot, that the MRT Department was pressured to rethink the possibilities of preservation.

It has been asserted that this is wrong for the following reasons:[citation needed] In 2009, the Losheng Sanatorium was named a potential World Heritage Site,[3] "because it has witnessed the development of politics, medicine, public health and human rights in Taiwan over several decades.

Hereby CCA reiterates that the 90% preservation plan, evaluated by Hsin-Lu cooperation, will lengthen the construction period for about four months, and appends a three billion budget to it.

The protestors, consisting of students and remaining Losheng patients, were forced by the police into buses, immediately transported to suburban mountainous areas around Taipei City, and were ordered not to return to the scene that day.

There were scuffles as the authorities attempted to post the official notice issued by the Taipei County government to request the management of sanatorium to tear down the structure by 16 April 2007.

[1] The Public Construction Commission (公共工程委員會) of Executive Yuan ruled that 39 buildings of Losheng Sanatorium should be preserved, 10 to be reconstructed or reconstituted in selected locations, and 6 to be demolished.