紧紧 + Verb
The adverb 紧紧 (jǐnjǐn) means "tightly" or "firmly," emphasizing the intensity or closeness of an action. It is formed by reduplicating the character 紧 for emphasis. For example, 紧紧拥抱 means "to embrace tightly."
她紧紧握住妈妈的手不肯松开。
Tā jǐnjǐn wò zhù māma de shǒu bù kěn sōngkāi.
She held her mother's hand tightly and wouldn't let go.
他紧紧抱住失而复得的小狗。
Tā jǐnjǐn bào zhù shī ér fù dé de xiǎo gǒu.
He tightly hugged the dog that had been lost and found again.
窗户要紧紧关好,外面风很大。
Chuānghu yào jǐnjǐn guān hǎo, wàimiàn fēng hěn dà.
The windows must be shut tightly; it's very windy outside.