Rules of the Air Article 14

Parachute descents, other than emergency descents, shall not be made except under conditions prescribed by the CAA and as indicated by relevant information, advice and/or clearance from the appropriate air traffic services unit.
中文原文 飛航規則第14條
航空器在飛航中,除緊急情況外,不得跳傘。
但經民航局核准並於跳傘時經航管單位許可者,不在此限。

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