1July 7, 964, Li Nanping flew into the mainland with a U-2 plane, which was very cunning. He let another U-2 plane and RF- 10 1 cover himself from the north, while Li Nanping took the U-2 to photograph the PLA's defense along the coast of Guangdong and Fujian. The second battalion of surface-to-air missiles ambushed in Zhangzhou, Fujian Province responded calmly. When the U-2 flying from the south was only 32 kilometers away from the position, the missile was launched. It took three seconds for the U-2 plane to respond, but it was too late. The U-2 plane, piloted by Li Nanping, crashed in Hongban Village, 7 kilometers southeast of Zhangzhou, Fujian. The pilot died in the cockpit. After examination, it was found that he didn't have any documents on him at that time, but he found a gold ring on the ring finger of his left hand. Its style is very ordinary, but the word "Ye Qiuying" is engraved on it. She is Li Nanping's wife.

1one day in July, 964, the China People's Liberation Army Air Force General Staff sent someone to see Ye, asking him to recognize one thing, that is, the gold ring. It is said that Ye Changdi was shocked when he saw this ring. He jumped out of bed and stood there for a long time. Then he stammered, "Did you knock down Li Nanping?" This shows that Li Nanping's status is high.