old friends are precious and valuable
老朋友是宝贵和珍贵的 (lǎo péngyǒu shì bǎoguì hé zhēnguì de)
"I always say, old friends are gold."
"我总是说，老朋友是黄金。" (wǒ zǒng shì shuō, lǎo péngyǒu shì huángjīn)
to behave confidently and proudly
to make small adjustments to improve performance
to say exactly what you think
to make a noticeable difference or impact
to contact someone to exchange updates
kept secret or very confidential
