sorry for the late reply. Erm as far as I know (I may be wrong here) IMU's CM is taught in a mixture of Chinese & English, with Chinese being the majority (based on the few sessions I heard of). Based on one of the CM student's reply on another thread here:
its not an easy course I just have to tell you, its no easier than Medicine - Every course in IMU is tough, and Chinese Medicine is no exception. What makes CM uniquely difficult is that you need to learn the western medicine components (Anatomy, Physiology, Pathology, Microbiology... etc etc) simultaneously as you learn the Chinese Medicine (Ying and yang, 5 element, herbal medicine, acupuncture) - the western medicine component is being taught by Doctors teaching medical students.
IMU at least makes an attempt to teach all modules in English, and for foreign students they give 1 year free mandarin tuition (which I took!) - although yes you can't possibly teach everything in English - so lecture is in mixture of English and Chinese. I just had my Herbal formula exam, the way we are examined we are provided with Pinyin "Danggui" instead of the 当归 chinese characters. We're not really required to know the scientific name (Radix Angelicae Sinensis). same goes for acupuncture points.
I can say for a fact that the lecturers don't really change their contents between medicine and chinese medicine - so for my classmates, western medicine subjects are pretty hard...
I can't really recommend whether it's better to study TCM at China or IMU's better, but from what I can gather it seems that due to IMU being a medic focused school, the western medicine component would be top notch as it'll be taught by professional medic lecturers. The courses would also be taught in a mixture of Eng & Chinese (as oppose to only 1 or the other), and while YMMV, I personally think this is better as both languages are equally important when it comes to your future career. At the very least, not all CM patients are fluent with Chinese, & some English would (IMO) help tremendously if you're thinking of branching out to countries other than China or Taiwan.