To be very likely to succeed; to have success within one's grasp. This idiom refers to ancient contracts written on bamboo slips that were split into two halves; the creditor held the left half, or [[左券|左券|zuo3 quan4]], as proof of the debt.

(idiom) to have full confidence in one's success; to have the outcome securely in hand. In ancient times, the creditor held the left side of a contract [[左券|左券|zuo3 quan4]], which served as proof of their claim.

To have full assurance of succeeding; to have the upper hand.

to hold the left half of a contract tally, meaning to have a sure win or be certain of achieving an objective

To be sure of winning or achieving an aim; to have full assurance of success. In ancient times, a contract was split into two halves and the left half was held by the creditor as proof of debt.