Complex sentence: Tua Pek Kong was a man named Zhang Li (张理) of Hakka family, his Sumatra bound boat was struck by wind and accidentally landed on Penang island of Malaysia, which at that time had only 50 inhabitants.
Split into simpler sentences: Tua Pek Kong was a man named Zhang Li (张理) from the Hakka clan. His Sumatra-bound boat was struck by wind and accidentally landed on Penang island of Malaysia, which at that time had only 50 inhabitants.