How long is Chang Xia's coffin?

The length of the coffin in Changchun is four feet, three inches and six minutes.

On the day of the long summer, the sun moved to 45 degrees of the yellow meridian, and the sun shadow was measured with standard meters at noon, which was 4 feet, 3 inches and 6 minutes long, equivalent to the current 1. 108 meters.

There are 24 solar terms in a year, and the profit and loss of each solar term are the same (solar term is an instrument to measure time according to the shadow of the sun, and solar term is the length of the measured shadow).