Right on! I'm glad someone else here appreciates Kung Fu. Thumbsup
Anyway, David definitely should have wandered back to see Michael again, if only to check on how things were going.
Michael would be the Teacher now and probably in the midst of conflict with the criminal element and his former comrades in the Police Department, including his own brother.

"Logical! If they were logical, they wouldn't be human!
They are driven by strange impulses"
General Urko (Mark Lenard), Planet of the Apes TV series, "The Surgeon". (1974).