Dad left us forever at 6:20 a.m. on March 29, 2020, and went to heaven to meet his little daughter and accompany each other. Dad was admitted to the Beijing Institute of Geology in the early 1950s and now China University of Geosciences. After graduating, he worked in the Sichuan Petroleum Administration Bureau, and then was transferred to Guiyang to lead the team to participate in the Daqing battle. In the early 1960s, he met his mother in Guiyang. After his marriage, he had his eldest and youngest daughters in Guiyang. Then he was transferred back to the Research Institute of Sichuan Petroleum Administration in Chengdu, where he later had the most loving youngest son. Dad is a geologist and scholar. He loves work extremely. In the early years, he fought in the north and south of China's major rivers, including the Qaidam Basin, Guiyang, Yunnan, Chongqing, and Daqing, Heilongjiang. He worked tirelessly, worked diligently, trained younger geologists, and made great contributions to China's petroleum geological industry. At the beginning of 1959, he led the Yunnan survey team 119 survey team to continue the field work for more than April, climbing the mountain and wading, camping in the tent in the mountain forest, is the first person in my family to hike outdoors. At that time, the lion wolf roared and used only one revolver to protect the safety of the team. It was also the originator of his children's favorite guns. Dad is an ordinary ordinary person in life. Because Grandpa died very early, he has a deep feeling for grandma and is very filial. However, Dad also inherited the traditional shortcomings of the Li family. Of course, Dad also shouldered the burden of the family, and raised our three children together with Mom. We are naturally very grateful. I remember my dad was on a business trip to Liang Ping while his daughters were at university, and breathlessly sent the two of them in Chongqing to Liang Pingyu with a cannabis bag. The junior junior high school physical education class does not perform horizontal bar movements. Dad accompanies the practice. He has practiced first, and then teaches his son to learn by hand. After his father retired, he and his mother raised their grandchildren. At the same time, they also developed a hobby of collecting coins and stocks, and loved traveling. The footprint remains in the US, Kadong, and on both sides of the strait. New York, Philadelphia, Washington DC, Miami, Los Angeles, Las Vegas, Grand Canyon, Toronto, Quebec, Montreal all have his figure, or cruise ship, or flying to the Caribbean, Dominica, Mexico and other places. Life in old age is interesting and colorful. However, in 2015, he gradually started to lose some memory, and gradually developed into the last elderly dementia, which affected walking. He has lived in a nursing home for the elderly since September 2016. In March 2020, he left the land where he lived for nearly 87 years and went to heaven. Looking at the photos of Dad's past, Dad seems to have been by our side and never left. Jiangyou ’s cabin, No. 300, 5th floor, Petroleum Yard, Toronto Yard, New York, Taiwan, Los Angeles, Las Vegas, Miami, Dominica ... Dad, everyone loves you, you go all the way! See you again in heaven!