Complex sentence: However, the pardon was not extended to higher level detective superintendents, and those high level Chinese officers famous for their riches left for exile to Taiwan, where there was no extradition treaties with Hong Kong.
Split into simpler sentences: However, the pardon was not extended to higher-level detective superintendents. Those high-level Chinese officers, famous for their riches, left for exile to Taiwan, which had no extradition treaties with Hong Kong.