What is the touching symbol in the WeChat expression?

Eyes full of emotion

Both can be used as symbols of "moving".

Emoji, originally just a network subculture, has been widely accepted by the society with the popularity of the Internet and mobile phone short messages. Later, many communication programs (especially real-time communication programs) and forums began to express their feelings with more vivid small icons. Therefore, at the end of the 20th century, a new word to explain these emoji appeared in English, that is, Emotion and small icon were skillfully combined to form the new word "emotion".

In Japanese, the Chinese character "Yan Wen Zi" (Japanese: かぉもじじ Yan Wen Zi) is used to address Yan characters, meaning face, while the word "Yan Wen Zi" is used to express the writer's mood by words and symbols, which is gradually adopted by young people in China.