1. All appeals filed by the Plaintiff (Counterclaim Defendant) and the Defendant (Counterclaim Plaintiff) are dismissed.

2. The costs of appeal shall be borne respectively by each party.

1. Around October 2009, G on behalf of the plaintiffs as the father of the plaintiffs on the exchange of the Incheon building and Chuncheon land, and the defendant signed a sales contract (hereinafter referred to as the "sales contract") dated September 17, 2009 on the land owned by the plaintiffs (the plaintiff B7/10 shares, the plaintiff A3/10 shares), and on September 12, 2009 on the land owned by the defendant, the land owned by 38,876 square meters of land, E forest land, E forest land 4,066 square meters, F forest 13,190 square meters, H forest 31,636 square meters, and 53,058 square meters of land in I forest 36 square meters, and on September 12, 2009 on the land owned by the defendant (hereinafter referred to as "Seoul building").

According to the first sale and purchase contract, G representing the plaintiffs sells the Incheon building to the defendant at KRW 850,00,000, but the down payment of KRW 15,000,000 shall be paid on October 9, 2009 on the date of the contract, the intermediate payment of KRW 50,000,000, and the intermediate payment of KRW 690,000 shall be paid on October 15, 2009, and the remainder of KRW 90,000 shall be paid on October 15, 200 (the sum of the down payment, intermediate payment, loan, and remainder shall not coincide with the purchase price as KRW 845,00,00). Meanwhile, the first sale and sale contract includes the following special agreements as part of the defendant:

1. The purchaser shall verify all the field surveys and related documents;

2. It is necessary for the principal to conclude a contract for the transfer of the value of goods between themselves, and therefore, it is agreed that there is no objection after mutual review, such as financing, lease, facilities of a building, road conditions, etc. The objection is raised legally.

5. The details of loans and leases shall be added separately.

6. Facilities of the second floor shall be removed at the time of the request of the buyer (by the seller) or paid by the seller when the buyer makes an estimate.

As of October 8, 2009, the first sale contract is accompanied by a detailed statement of lease of the Incheon building prepared by G, and according to this, the lease contract is concluded in the Incheon Building which is equivalent to the total deposit amount of KRW 230,000,000, monthly rent of KRW 4,700,000.

b) the Commission;