Sweaty palms
Are NOT a good sign of good Taiji practice in that it is something to aim for. It is NOT a platform for better practice if this happens all the time, it is in fact a sign that there is a low level kind of illness and the body is trying to sweat out of the distal limbs and digits of the body.
If it happens for a limited period of time then yes it shows that the body has managed to expel sick pathogens, however if it constantly happens then it means the body is not able to expel it properly and it's best do get some other treatment whilst maintaining your Taiji to rectify the deficiency.
" Don't confuse yourself with someone who has something to say " - The Fall
" I do not like your tone/ It has ephemeral whingeing aspects " - The Fall
" There are twelve people in the world/ The rest are paste " - Mark E Smith