This represents the unit: Fang.
There is a small word below each small table to indicate the number of digits.
The reading of this meter is thousands of digits.
The pointer indicates that the reading is small, not big.
This indicates that the value is 9.
Taken together, this small table represents 9000 square meters.
The density of water is 1T/ m3. That is to say, 9000 tons of water have been used.