Name the writing interest group and write down the reasons as follows:
1. Wensi Club: "Wen" refers to articles or literature, and "Si" means thinking and conception. The name highlights the in-depth thinking and creative thinking of the group members in their writing, while the word "社" conveys that this is a community focused on literary thinking and creation.
2. Pen Dance Troupe: "Bi" represents the tool for writing, and "Dance" implies that words are rhythmic and fluid like dance. The name vividly expresses the group members’ pursuit of the dance and vividness of words in writing, while the word “group” emphasizes the team’s collaboration and common goal.