Tsai Ying-wen's enjoys a broad mandate from her commanding victory in Taiwan's presidential election and her independence-leaning party's new legislative majority, but managing the island's delicate relations with China will be tricky.

Already, Beijing has responded with statements following her Saturday night victory warning that it will not budge on its bottom line that Taiwan's leader must agree that the communist mainland and self-governing island democracy are part of a single Chinese nation.

Tsai, who will be Taiwan's first female president, won by 56 percent of the vote to 31 percent for her closest rival Eric Chu of the China-friendly Nationalist Party.

Her Democratic Progressive Party won 68 of 113 seats in the Legislative Yuan, Taiwan's parliament, giving it its first majority in the assembly long-dominated by the Nationalists.