yī yǐ guàn zhī
(idiom) (of a principle, purpose etc) consistently upheld; adhered to from beginning to end
一
yī
one
以
yǐ
abbr. for Israel 以色列[Yi3 se4 lie4]
贯
guàn
to pierce through
之
zhī
(possessive particle, literary equivalent of 的[de5])