A. On July 2007, the Defendant publicly announced a tender for the public construction project in order to ensure that an end-user institution is "one thousand and eight hundred days after commencement of construction work" and that the construction period is "35,068,100,000 won" (hereinafter "the construction project in this case"). B. The tender description on the above bidding included the general conditions of the construction project (the established rules of the Ministry of Finance and Economy 2200.04-104-16, 007; hereinafter "general conditions") and the construction contract execution guidelines for bidding and contract (the date of 2004-159-4, 007, 207, 2000, 207, 2000, 300,000,000,000,000,000,000 won and 20,000,000,000 won and 10,000,000 won and 7,00.

E. After the conclusion of the instant contract, the construction period of the instant contract was extended due to the same reasons as indicated below, such as the investigation of the drilling of cultural heritage and the winter season, and accordingly, the contract was concluded eight times in total as follows.

Reasons for extending the number of days of the completion of a contract for the next time of a contract on October 1, 2007 for the first time to extend the number of days of the completion of the contract for the next time, shall be as follows: < Amended by Presidential Decree No. 23602, Sep. 11, 2012; Presidential Decree No. 24348, Jan. 7, 2013; Presidential Decree No. 22175, May 20, 2010>