evidence: TAIPEI (Reuters) - It is "impossible" for the People's Republic of China to become Taiwan's motherland because Taiwan has older political roots, the island's President Lai Ching-te said on Saturday. Lai, who took office in May, is condemned by Beijing as a "separatist". He rejects Beijing's sovereignty claims, saying that the island is a country called the Republic of China, which traces its origins back to the 1911 revolution that overthrew the last imperial dynasty.