Regulations Governing the Banking Activity and the Establishment and the Investment by Financial Institution Between the Taiwan Area and the Mainland Area Article 68

The net worth of a branch of Mainland bank shall not be less than two thirds (2/3) of the minimum operating capital required by the Competent Authority. If the net worth falls below such minimum level, the bank’s agent for litigious and non-litigious matters in Taiwan Area shall promptly report to the Competent Authority.The Competent Authority may order a Mainland commercial bank or Mainland-funded bank having the situation described in the preceding paragraph to remit in sufficient funds to meet the required level of the operating capital of its branch in Taiwan within a prescribed period of time. If the bank fails to comply accordingly, the Competent Authority may order the branch of Mainland bank to suspend business and take other necessary measures pursuant to the Banking Act.
中文原文 臺灣地區與大陸地區金融業務往來及投資許可管理辦法第68條
大陸銀行分行之淨值,不得低於主管機關規定最低專撥營業資金之三分之二,不足者,其在臺灣地區之訴訟及非訴訟代理人應即申報主管機關。
主管機關對具有前項情形之大陸地區銀行或陸資銀行,得令其限期匯入補足專撥營業資金;屆期未補足者,主管機關得令其停止業務並依銀行法為其他必要之處置。

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