Tā juédìng gūzhù-yīzhì, bǎ quánbù jīxù tóurù zhège xiàngmù.
He decided to stake everything on this project, investing all his savings.
Tips
history
Literally 'a lone bet, one throw' - from gambling. 注 means a stake/bet, 掷 means to throw (dice). The idiom describes risking everything on a single attempt with no backup plan.