Preface to the Holy Teaching: It took more than 20 years to carve this tablet in the third year of Xianheng (AD 672), which is called Preface to the Holy Teaching in Tang Sanzang. The tablet is nine feet four inches six minutes high and four feet two inches four minutes wide, with 30 lines of calligraphy, each line ranging from 83 to 88 words. Unfortunately, it's broken. Xi existing forest of steles.
The ancient weights and measures were different from today. I guess it's not much difference.
I have to divide it up myself.
In fact, people don't remember it after reading it. I remember that the average medium-sized word is about 6*6 square centimeters.
You'd better look at the link below.
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