The idiom meaning "watering in harmony" is usually used to describe interpersonal relationships, especially the intimate relationship between men and women.

The source of the blending of water and milk:

Source: Song Dynasty Shi Puji's "Wudeng Huiyuan" Volume 17: "As a result, black and yellow cannot be distinguished, and water and milk cannot be distinguished.

Usage of water and milk blending together:

The metaphor of this idiom is very vivid, allowing people to understand its meaning vividly. Water and milk blending together means that two different substances are completely integrated in form. Obvious boundaries are like two completely different people or things that are combined in some way to achieve perfect unity.

At the same time, "in harmony" can also be used to describe two different cultures and ideas. Or the fusion of art. This fusion is natural, without forced or deliberate elements, just like the fusion of water and milk, which naturally forms a new form and style.

The idiom "water and milk blend" is an idiom. It is a very vivid and expressive metaphor that allows people to intuitively understand the perfect fusion between two different things.

Examples of harmony:

1. Their. Love is like the fusion of two hearts, and their thoughts and emotions are intertwined to form a beautiful picture.

2. Between them, love has reached the point of fusion, and everything is in harmony. Contradictions and conflicts have disappeared, leaving only harmony and happiness.

3. Their relationship is like a fusion of two cultures, admiring, respecting and tolerating each other, and creating a new world together.

4. Their cooperation is like the fusion of two technologies, promoting, complementing and improving each other, and jointly creating a new technological achievement.

5. Their music is like a fusion of two styles. The musical elements of each other blend and penetrate each other, forming a new music style.

6. Their relationship is like two kinds of music. They support each other, encourage each other, and pursue the goals and ideals of life together.

7. Their love is like the harmony of two landscapes, admiring and cherishing each other. ***Together we created a new beautiful landscape