The "ear exercise" is in a book from our library "Qigong Remidies for Health Problems" by Xu and some other Chinese author.
You stand up straight, feet shoulder width apart, place your palms (the laogong point or whatever it's called) over the ear canal. Both hands covering the ears. Overlap the tips of your fingers on the back of the neck. Now tap your left fingers 3 times, then tap your right finger 3 times. Do that for 1 minute.
When you've done that, pull your palms "gently" off the ears to create a small vaccuum.
It's quite cool.