有头无尾 (yǒu tóu wú wěi) | Meaning: (idiom) to fail to finish off what one started | Chinese Idiom with Pinyin & Origin

lit. tiger's head, snake's tail (idiom); fig. a strong start but weak finish虎头蛇尾hǔ tóu shé wěi

to start but not finish (idiom); to fail to carry things through · lack of sticking power · short attention span有始无终yǒu shǐ wú zhōng

to lack patience无恒wú héng

badly damaged · shattered残缺cán quē

(idiom) to fail to finish off what one started