Absolutely. Janssen had a great sense of humor and a fabulous way of displaying it, even when acting in a serious show like THE FUGITIVE. There are some great moments not only in "The Chinese Sunset" but other shows too - the most obvious being "Angels Travel Lonely Roads" and to some extent its sequel.
There are quite a few throw-away lines that Janssen pulls off with perfection as he rolls his eyes and mutters under his breath throughout the series that are quite amusing. It keeps the show from being mired in grimness all the time, as even a man in constant danger once in awhile sees the humorous side of things.