The red background of posture usually represents passion, strength, vitality, tension and other emotions or States. In China culture, red is a symbol of auspiciousness and luck, and also represents enthusiasm and courage. Therefore, in China culture, red is often associated with heroes and soldiers. In western culture, red is usually associated with love and emotion. For example, a red rose is a symbol of love, and a red heart often represents love. In addition, red is also associated with strength and power. In politics and business, red is often used as a sign and logo to attract people's attention and express a strong image.