Most of you heard of the "inner smile" practice, popularized in the West by Mantak Chia. I've been through a few thousands of English books on Taoism, esp. books on practice, but somehow never seen the Chinese term for this practice. I also don't remember seeing this practice in any book other than Chia's books.
Please don't get me wrong, I'm NOT saying that this practice is inauthentic. Just wondering why I can't find the original CHINESE TERM for this practice.
I can read Chinese, so if you know the term and can write the Chin. chars, I'll appreciate it.