There's a famous proverb: 姜还是老的辣 (jiāng háishì lǎo de là) — 'old ginger is spicier.' It means experienced people are more capable, similar to 'wisdom comes with age.' Chinese people also believe ginger tea (姜茶) warms the body and fights off colds.
mistakes
As a surname, 姜 is written the same in simplified and traditional (姜). But as 'ginger' (the food), the traditional form is 薑 with the grass radical on top. Mainland China merged both into 姜.
