Complex sentence: Because these Chinese men did not bring any Chinese women along with them, they took in Hawaiian wives instead, and frequently, adopting Chinese-Hawaiian surnames like Akaka, Ahina, etc, in which words of Chinese origin are pronounced with a soft Hawaiian tone.
Split into simpler sentences: Because these Chinese men did not bring any Chinese women along with them, they took Hawaiian wives instead. They became assimilated and created Chinese-Hawaiian surnames like Akaka, Ahina, etc, in which words of Chinese origin are pronounced with a soft Hawaiian tone.