By Yimou Lee and Sarah Wu TAIPEI (Reuters) -Taiwanese voters swept the ruling Democratic Progressive Party’s (DPP) presidential candidate Lai Ching-te into power on Saturday, strongly rejecting Chinese pressure to spurn him, as China said it would not give up on achieving “reunification”. Lai’s party, which champions Taiwan’s separate identity and rejects China’s territorial claims, was seeking a third successive four year term, unprecedented under Taiwan’s current electoral system. However, in a measure of public frustration at domestic issues like the high cost of housing and stagnating wage…