Sims tai chi in the park

A very frequently asked question is How do I make my Sims tai chi? or  how to do tai chi at the park in sims free play? 

Step 1: First of all you need to have a Park in the Map completed. Its location is as shown below with green Background. Just above Promotions r us building and to the left of lake.

Step 2: After that you can call one of your sims there and Touch sim itself and you will get the option to perform tai chi in Sims FreePlay. This option is enabled along with 'Reach Nirvana' option inside the Park.
It is finished in 1 hr and gives 150XP.