How to get to Hutong from Temple of Heaven by subway in Beijing?

Well, which one do you refer to?
You can go to Shichahai Area. From your starting place, walk to Tiantan East Gate Station first and take subway line 5 to Dongsi Station. Then transfer to subway line 6 to Nanluoguxiang Station. Nanluoguxiang (South Gong and Drum Lane) is a famous one that wins popularity in tourists. Then you can walk to Shichahai Area. Most of them are located in this area.