People drop lines in holes on a frozen river at a trout fishing event in Hwacheon, about 20 km (12 miles) south of the demilitarised zone separating two Koreas, northeast of Seoul Jan. 13, 2008. (Xinhua Photo)

A participant shows off a trout he caught by dropping a line through a hole on a frozen river in Hwacheon, about 20 km (12 miles) south of the demilitarised zone separating two Koreas, northeast of Seoul Jan. 13, 2008. The trout fishing event was part of the annual ice festival, which attracted more than 1,000,000 people and lasts for three weeks in January. (Xinhua Photo) A participant shows off a trout he caught by dropping a line through a hole on a frozen river in Hwacheon, about 20 km (12 miles) south of the demilitarised zone separating two Koreas, northeast of Seoul Jan. 13, 2008. The trout fishing event was part of the annual ice festival, which attracted more than 1,000,000 people and lasts for three weeks in January. (Xinhua Photo) A boy drops a line in a hole on a frozen river during a trout fishing event in Hwacheon, about 20 km (12 miles) south of the demilitarised zone separating two Koreas, northeast of Seoul Jan. 13, 2008. (Xinhua Photo)