Meaning of chóng chóng:
重重
layer upon layer; one after another; heavily; severely
Tā shēnghuó zhōng yùdào le chóng chóng kùnnán.
他生活中遇到了重重困难。
He encountered layer upon layer of difficulties in life.
Jīngguò chóngchóng kùnnán, tā zhōngyú shíxiànle mèngxiǎng.
经过重重困难,她终于实现了梦想。
After overcoming difficulties one after another, she finally achieved her dream.
Tā zài mén shàng zhòng zhòng de qiāo le jǐ xià.
他在门上重重地敲了几下。
He knocked heavily on the door a few times.
Tā bèi pīpíng de zhòng zhòng, ràng tā gǎndào hěn shòushāng.
他被批评得重重,让他感到很受伤。
He was criticized severely, which made him feel very hurt.