Enforcement Rules of the Estate and Gift Tax Act Article 23

For the decedent’s estate or gift in a foreign country subject to tax payment obligation pursuant to the provisions of Article 1 and Article 3 of the Act, the Ministry of Finance may entrust the ROC Embassy in the location where such estate is inherited or the gift is made for the valuation of said estate or gift; where in absence of an embassy, local public accounts or notaries may be engaged for property valuation.
中文原文 遺產及贈與稅法施行細則第23條
被繼承人在國外之遺產或贈與人在國外之贈與財產,依本法第一條或第三條規定應徵稅者,得由財政部委託遺產或贈與財產所在地之中華民國使領館調查估定其價額,其無使領館者,得委託當地公定會計師或公證人調查估定之。

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