Regulations Governing Investment in Securities by Overseas Compatriots and Foreign Nationals Article 31

Overseas depositary receipts must be redeemed before investors can buy (either directly or via a depositary institution) the original securities on the domestic market, and the original securities thus purchased shall not exceed the quantity of shares for which the receipts were redeemed. [Once investors have purchased overseas depositary receipts thus redeemed,] they must place the original securities in the care of a custodian institution before a depositary institution can reissue overseas depositary receipts evidencing the same securities.The reissuance of overseas depositary receipts contemplated under the preceding paragraph may only take place where it is expressly provided in both the deposit contract and the custody contract that overseas depositary receipts may be reissued following their redemption.Exchange settlement matters arising in connection with the funds required for the transactions contemplated under paragraph 1 shall be handled in accordance with the applicable foreign exchange acts and regulations.
中文原文 華僑及外國人投資證券管理辦法第31條
海外存託憑證經兌回後,投資人始得自行或委託存託機構在原兌回股數範圍內自國內市場買入原有價證券或將其已持有之原有價證券交付保管機構後,由存託機構據以再發行海外存託憑證。
前項再發行海外存託憑證,以存託契約及保管契約已載明海外存託憑證經兌回後,得再發行者為限。
第一項所需資金之結匯事宜,應依外匯相關法令規定辦理。

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