Final answer:
A Hangtu or Han tu base is an ancient Chinese construction technique involving compacted earth used to build sturdy structures such as the Great Wall of China.
Step-by-step explanation:
A Hangtu or Han tu base refers to a construction technique used in ancient Chinese architecture. This method involves the creation of walls and foundations using compacted earth mixed with organic materials, such as straw and rice husks, as well as inorganic substances like lime or sand. The mixture would then be compacted in layers to build extremely sturdy walls. The most famous example of hangtu construction can be seen in the Great Wall of China, which has portions built using this technique. The process results in a solid structure that can withstand the elements and has been used for thousands of years in China.
A Hangtu or Han tu base is a way of representing numbers in the ancient Chinese numeral system. The base system uses a combination of symbols to represent different values. In the Hangtu base, the symbols used are based on the number of horizontal and vertical strokes in each symbol.
For example, the symbol represents the number 1, while the symbol represents the number 2. By combining these symbols, different numbers can be represented.
The Hangtu base was used in ancient China before the adoption of the Arabic numeral system. It is an interesting example of a non-positional numeral system.