 This only occurs when the Court is low on non-permanent judges from Hong Kong, and is extended only to the most eminent and senior serving High Court justices.The controversial power of final interpretation of national law including the Basic Law is vested in the Standing Committee of the National People's Congress of China (NPCSC) by virtue of Article 158 of the Basic Law and by the Constitution of the PRC; however, national laws which are not explicitly listed in Annex III of the Basic Law are not operative in Hong Kong.Article 158 delegates such power to the courts of Hong Kong for interpretation while handling court cases.