All of the plaintiffs' primary and conjunctive claims are dismissed.

The costs of lawsuit shall be borne by the plaintiffs.

. It may require an indirect cost of KRW 4,338,00,000.

4. However, since then, due to the change of the construction contract term according to H’s excavation room, the total construction contract term has been extended on May 31, 2017, and due to the direction of the suspension of construction between 65 days by ear company under “I (I, May 22, 2017)” is expected to extend the additional air in the future.

5. Accordingly, we will claim the following indirect costs for the extension of the air, other than the indirect costs for the extension of the air (4,388,000,000 won) demanded through J ( December 21, 2016) and the additional extension period and the indirect costs for the extension of the air that may be additionally extended due to the direction to suspend the work of your company.

h - Total construction period - Change: From September 30, 2010 to September 13, 2013 (1,080 days): From September 30, 2010 to June 30, 2018 (2,466 days, No. 1,386 days), the estimated amount to be re-requested for the adjustment of the contract amount due to air extension - From September 14, 2013 to December 31, 2016: 4,338,00,000 (including VT) - The estimated amount of actual cost of re-request - at the time of request for the adjustment of contract amount under air extension - the estimated amount of actual cost of KRW 437,00,000 (including VT) - From January 1, 2017 to June 30, 2017.

6. In this regard, we should inform us that the request for the adjustment of the contract amount due to the extension of the said air would be scheduled to set up an objection and conclude the contract for the total construction and the completion of the eightth number of primary construction works, and we should inform us that the reservation would follow the results of the legal judgment such as the future court ruling.

Plaintiff

On May 31, 2017, A sent to the Defendant an official document (No. 5-4) regarding the application for contract price adjustment due to extension of the construction period as follows:

Article 39(3) of the Act on the Management of Public Institutions, Article 2(5) of the Rules on Affairs of Contracts of Public Corporations and Quasi-Governmental Institutions, which is applicable mutatis mutandis pursuant to relevant statutes, and the former State Contracts Act (amended by Act No. 11377, Mar. 21, 2012; hereinafter “former State Contracts Act”) and the former Enforcement Decree of the State Contracts Act (amended by Presidential Decree No. 221, Jul. 21, 2010).