1. 虹出现的位置，与太阳所在方向相反。上午太阳在东，虹在西边。下午太阳在西边，虹在东。因天气系统运动的规律，是自向东移动，西边出现虹。表明西边的雷雨区会移来，本地将有雨，东边有虹，表明雨区在东，它会东移出，就不会影响本地。所以也叫东虹日头，西虹雨。

1. The position of the rainbow is on the opposite side of the sun. In the morning, the sun is in the east, and the rainbow is on the west. In the afternoon, the sun is on the west, and the rainbow is on the east. According to the regular movement of weather systems, they move from east to west, so a rainbow appears on the west side. This indicates that the thunderstorm area in the west will move towards this region, and it will rain locally. When there is a rainbow in the east, it indicates that the rain area is to the east, and it will move eastward, thus not affecting the local area. Therefore, it is also called "east rainbow, west rainbow rain."

2. 早虹雨 晚虹晴

2. Early rainbow, rain in the morning; late rainbow, clear weather in the evening.