In the story, Cao Chong used the equivalent substitution method. He drove the elephant to a big ship and drew a line where the hull sank.
Then he drove the elephant to the shore, and then he put the stone on the boat. At this time, he had to put it on the boat and sink to the place where the line was drawn.
Then we can weigh the stones on the boat. At this time, we have to add up the weight of the stones on the boat, which is the weight of the elephant.
Then this story can give some enlightenment to children. Be good at observing things and use your head to find a way. Children can also do great things.
Related instructions
According to historical records, Cao Chong said that the elephant was located in Maoxiangpo, and Huang Hao and relevant experts and scholars studied historical materials. After on-the-spot investigation, Maoxiangpo was located in Gangcun, Linzhang County, Hebei Province.
Huang Hao introduced that Gangcun is an ancient place in Linzhang County, Hebei Province. Linzhang County is located at the intersection of Taihang Mountain piedmont plain and Zhanghe River alluvial plain, with a wide and gentle terrain. The appearance of the name of Gangcun in the west of Linzhang City, Ma Pingchuan, shows that Gangcun was built on a soil slope or mound higher than ordinary places, and it is supposed to be named after Maoxiangpo.
According to the records of the old county annals of Linzhang County, "Maoxiangpo is twenty miles northeast of the county seat and five miles in Fiona Fang, which is like an ancient beast." Yecheng was built in Qi Huangong in the Spring and Autumn Period, and Ximen Bao in the Warring States Period was the imperial edict. Emperor gaozu began to set up yecheng, which ruled the county town 1000 years. It was not until the sixth year of Jiande in the Northern Zhou Dynasty that Linzhang County Ya moved out of Yecheng. In the 1980s, the national archaeologists excavated and tested Hongshan Village, the northeast corner of the wall of Yecheng Site in Linzhang, 20 miles northeast, just around Gangcun Village. This is also completely in line with the literature.
During the Daoguang period of the Qing Dynasty, Yao Jianzhi, the magistrate of Linzhang County, after sixteen years of reading ancient books and on-the-spot investigation, wrote the Book of Zhangshui in Linzhang County, which still exists today. Among them, Figure 9 of the Five Capitals of Cao Wei shows that the Zhanghe River flows from west to east in the northern part of Linzhang County today and passes through Gangcun in the north. In the late 1990s, villagers often washed sand in the north of the village until it was less than five or six meters. The quality of sand is good, which shows that it is the old road of Zhanghe River bed in those days, and once again proves that it is a famous place in Cao Chong.
Baidu Encyclopedia-Cao Chong is an elephant.