Complex sentence: The Joint Communiqué of the Government of Japan and the Government of the People's Republic of China is signed in Beijing, which normalizes diplomatic relations with the People's Republic of China after breaking official ties with the Republic of China (Taiwan).
Split into simpler sentences: The Joint Communiqué of the Government of Japan and the Government of the People's Republic of China is signed in Beijing. Japan normalizes diplomatic relations with the People's Republic of China after breaking official ties with the Republic of China (Taiwan).