三、全文释义练手余功虚实论拳术无有不讲虚实的,练手余功尤其如此。这里先讲身体的虚实,再谈拳术的虚实。那些身体虚弱的人,一般说来都是先天性的。那么这种先天之虚,亦即先天之不足,就应当用后天的方法来培补。培补的方法有许多,无外乎保养精神、强壮筋骨、滋补气血,这些精神 Third, the full text Interpretation of practicing Yu Gong Virtual Boxing There is nothing to tell the actual situation, especially the practice of hand Yu Gong. Here to talk about the actual situation of the body, talk about the actual situation of boxing. Those who are physically weak are generally congenital. Then this kind of congenital deficiency, that is, the deficiency of nature, should be nurtured by the method of the day after tomorrow. There are many ways to make up, nothing less than the spirit of maintenance, strong bones, nourishing the blood, these spirits