老实
lǎo shi
honest; sincere
well-behaved; naive; gullible
old/venerable (老) + solid under roof (实) = honest and dependable
An elder's wisdom earns trust; under a roof, the head of the household keeps things real and solid. Together, age and substance point to someone reliably straightforward.
这个孩子很老实，从不说谎。
zhè ge hái zi hěn lǎo shi，cóng bù shuō huǎng。
This child is very honest and never tells lies.
他太老实了，总是相信别人说的话。
tā tài lǎo shi le，zǒng shì xiāng xìn bié rén shuō de huà。
He is too naive and always believes what others say.