Regulations on Terrestrial Television Business Broadcasting Domestically-Produced Programs Article 2

Not less than seventy percent of television programs shall be domestically-produced (Republic of China); not less than fifty percent of dramas broadcasted during prime time viewing shall be domestically-produced; not less than forty percent of new broadcasts shall be domestically-produced.
中文原文 無線電視事業播送本國自製節目管理辦法第2條
電視節目中之本國自製節目,不得少於百分之七十;主要時段播出之本國自製戲劇節目不得少於同類型節目之百分之五十,其新播比率不得低於百分之四十。

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