Type three numbers at both ends.

Type three numbers at both ends: 747.

Two-headed, fighting, three numbers are 747. The answer is 747, because the number represented by double-headed gas is 747.

Crossword puzzle is a kind of game that uses the characteristics of Chinese characters in form, sound and meaning to create crossword puzzles and guide people to guess another Chinese character. Crossword puzzle is a traditional word game in China, which belongs to a traditional form of guessing riddles on lanterns. This is also a unique language and cultural phenomenon in China. Crossword puzzles are mainly based on complex strokes and relatively independent radicals of Chinese characters in squares.

The structural combination is changeable, and it is carried out in various ways, such as clutch, loss increase, pictograph and understanding. With the rapid development of mobile Internet, there are many versions of app applications for traditional word games in China, including idiom crossword puzzles, idiom crazy guessing, idiom guessing, crossword puzzles and so on. This is to turn paper into application software to promote the "revolution" of paper digitally.

Crossword puzzles have a long history in China, which are widely spread, varied and endless. It is very popular among literati, and it is also used in political struggle and divination. In modern times, crossword puzzles are more popular as a high-level entertainment.

In the form of crossword puzzles, people split and clutch regular Chinese characters in various ways that are not in line with the principles of philology. In this unpredictable physical isolation process, it not only highlights the characteristics of physical knots contained in Chinese characters, but also fully demonstrates people's intuitive understanding of the physical structure of Chinese characters.

The riddle contains the unique aesthetic thoughts and traditions of China culture, namely, China's culture, China's thinking, China's knowledge, China's literature, China's wisdom, China's interest, China's games, Chinese aesthetic education and Chinese sentiment. It is not only integrated into the cultural tradition of China, but also includes the whole life of China people.

It is deeply rooted in the local cultural soil, meets the needs of people's life and survival, and maintains, consolidates and publicizes the unique carrier of Chinese civilization, Chinese character culture and literature. This is the cultural value and significance of riddle culture handed down from generation to generation.