另起炉灶

lìng qǐ lú zào

lit. to set up a separate kitchen (idiom); to start from scratch

back to square one; to start of on a new path

另

lìng

other

起

qǐ

to rise

炉

lú

variant of 爐|炉[lu2]

灶

zào

variant of 灶[zao4]