wú / lùn / yù / dào / shén / me / kùn / nán / tā / dōu / bǎ / chéng / shí / dàng / zuò / bù / kě / wéi / bèi / de / tiě / zé

无论遇到什么困难，他都把诚实当作不可违背的铁则。

No matter what difficulties he faces, he regards honesty as an inviolable principle.