Hello Peng Zhao ~
If you enjoy discussion, the Witnesses may not be what you are looking for. There is no freedom of expression at their meetings as all the answers to questions are given to you in the publication that is being read together. One merely parrots the thoughts of the Watchtower society's anonymous authors. Opinions are not allowed to be expressed freely and independent thought is not appreciated or encouraged. Reading of non-JW materials is not allowed and a person can be removed from the organization if they do so.
I share these thoughts with you as someone who for the first time in my life, after 40 years as a JW, is finally appreciating true freedom of thinking and expression separate from their organization.
Warm regards,
4JWY