Negotiable Instruments Act Article 37

The holder shall prove their rights on the bill by evidence of consecutive endorsements. If, however, there exists, among the endorsements, a blank endorsement, the endorser next in sequence is deemed to be the endorsee of the immediate preceding blank endorsement.An endorsement struck out that does not affect the sequence of the endorsements is deemed not to exist insofar as the sequence of the endorsements is concerned.An endorsement struck out that affects the sequence of the endorsements is deemed to be not struck out insofar as the sequence of the endorsements is concerned.
中文原文 票據法第37條
執票人應以背書之連續,證明其權利,但背書中有空白背書時,其次之背書人,視為前空白背書之被背書人。
塗銷之背書,不影響背書之連續者,對於背書之連續,視為無記載。
塗銷之背書,影響背書之連續者,對於背書之連續,視為未塗銷。

English translation for reference only; the Chinese text prevails. Not legal advice.