A thousand methods and a hundred plans
Refers to one trying to do something by every means possible
Neutral
医生千方百计想使他活下来,但无济于事 | Yīshēng qiānfāngbǎijì xiǎng shǐ tā huó xiàlái, dàn wújìyúshì
The doctor tried everything they knew to keep him alive, but to no avail
[Source]
她千方百计要取得销售部经理的位置 | Tā qiānfāngbǎijì yào qǔdé xiāoshòu bù jīnglǐ de wèizhì
She was doing everything she could possibly do to get the sales manager position
[Source]
By every means possible
None
This is an HSK chengyu
《朱子语类》(Zhū Zi Yǔ Lèi), a work by Sòng Dynasty (宋, 960 - 1279) author 朱熹 (Zhū Xī)
This chengyu is from a line in the work listed in the "Origin" section above