The defendant's appeal is dismissed.

1. Summary of grounds for appeal by the defendant;

A. In fact-finding, the Defendant did not have visited the instant building before or after April 12, 2016, where a fire occurred in the instant building, and did not have any fire to the instant building by means of delayed combustion.

B. The sentence imposed by the lower court (three years of imprisonment) is too unreasonable.

2. Determination

A. 1) The lower court, as indicated in its reasoning, stated the legal principles on criminal certification liability: ① the occurrence of a fire caused by an artificial fire using inflammable substances (U.S.) in the instant building; ② The Defendant’s Lee Dong-J (the father’s statement was followed on April 11, 2016), was the Defendant, and the Defendant was 30,000 won was placed in the lower-est typon card installed in the instant typon on April 18, 2016; ③ the Defendant was 50,000 won deposited in the instant typon 20,000,000,000 won was 6: 5,000,000,000,000,000 won was 20,000,000,000,0000,000,0000,000,000,000,000,000).