Taiwan has rejected the dependent visa application by Charles Heung Wah-keung, a pro-Beijing Hong Kong film producer, for reasons that include violating the island’s national security law and having links with mainland government organisations.Heung, whose wife Tiffany Chen Ming-ying – also known as Chen Lan – is Taiwanese, applied in December for permanent residence in Taiwan, according to the Mainland Affairs Council, the island’s top cross-strait policy planning body.The National Immigration….