There is no difference between these two words alone, but there is a difference when they are expressed by multiple numbers. According to the Dictionary of Modern Chinese Standards, the word "two" should be used before quantifiers such as "ge", "zhi", "tiao" and "ci", and the word "two" should not be used for single digits. Example: twice, twice; 152 people.

Second, Zuo Zuo is a traditional quality unit in East Asia. China appeared before the Han Dynasty, and then spread to Japan, Korean Peninsula, Vietnam and other places. The actual quality is worse from generation to generation, and it has also changed since it was spread to various places. The traditional 1 kg is equal to 16, hence the idiom "half a catty is eight liang". 1 equals 3 1.25g, which is different from 1 currently used in China.

The second is pronounced èr, which was first seen in Oracle Bone Inscriptions. Its original meaning is the two poles of heaven and earth separated by chaos, and later it is extended to the sum of one plus one, the second in order, unfaithfulness and so on.

Extended data;

Phrase analysis:

One, two [second]?

Numeric sequence.

Two. Seal 2 [F].

The inside page of the cover. The cover paper of books and magazines is double-sided, so these two sides are called cover (front) and cover 2 (back) respectively.

Three. On both sides

Refers to the left and right sides; Both sides.

Four, two

Numbers 2, 2.

V. Both sides [Li Xi m: ng bi ā n]

Refers to two aspects; Two directions.

Baidu Encyclopedia-II

Baidu Encyclopedia-II