Article 15, Paragraph 2, Subparagraph 1, of the House Tax Act provides that civilian housing apportioned for sale by the government shall be subject to one-half of the regular tax rate which, as evidenced by the relevant explanation documented in the Legislative Yuan’s Review Report, intends to provide taxation benefits to low-income people (the indigent) to lessen their economic burden. Civilian housing refers to housing apportioned for sale to people of low-income at a flat price, and naturally does not include housing offered for sale by the government at non-flat regular prices. To avoid doubt concerning the application of this tax-cut law, the Ministry of Finance followed the original legislative intent taking into account the then existing social and economic conditions, and stated in the letter, Tai-Tsai-Shue-Tze No. 37639, issued on December 27, 1975: “Civilian housing shall fulfill the following criteria: 1. Must not exceed twelve pings of construction per household; 2. Must comply with standards of the people who will live in said premises, not the people who will come to buy said premises at auction; and 3. The price of civilian housing shall not exceed the construction cost thereof, and the interest derived from construction loans shall be borne by the government.” The determination made based upon the foregoing definition of civilian housing as a guideline for authenticating the facts does not surpass the boundaries of the abovementioned law and does not contravene the Constitution. Such standards for identifying civilian housing shall be reasonably modified in accordance with the changes in the social and economic environment. In fact, it should be noted that the Ministry of Finance has, over a period of time, set forth standards for certain special housing, such as housing apportioned for sale to inhabitants of buildings constructed without licenses that are torn down for reconstruction.