Did he leave his youngest daughter in Hong Kong? He probably also met with some Chinese Liaison while in Hong Kong.
You know what bro, what do you think on the mind of most PNP officers and enlisted men when Duterte protected them from any legal litigation as he assume full command responsibility. Remember the PNP under Noynoy Aquino are infested with notorious criminal and corrupt officers, he had to fight the drug problem with one hand tied behind his back as he need the organization to fight the drug lords. Many of the EJK are being committed by these corrupt official to silence any withness to hide erase any evidence t, that's the root cause and Duterte cleanse the organization by firing most of the generals who had connection with most of the politician (an example Leila De Lima).
The drug problem had infested the whole Philippine institution and we are becoming a Narco state, so Duterte had to stake his name and administration to save the republic , he had to dirty his hand cause it's the only effective way to solve the problem.
We are a grateful nation to a fault and his deed will never be forgotten nor ignore. When he enter Camp Crame he will given the courtesy benefiting of a great president and it may look like he will be protected by the police.
A food for thought, If we follow the event that led to EDSA REVOLUTION it all started in Camp Crame.