Name the writing interest group and give reasons.

Name the writing interest group and write for the following reasons:

1, agency: "Wen" refers to articles or literature, and "Si" represents thoughts and ideas. This name highlights the deep thinking and creative thinking of the group members in writing, while the word "she" conveys that this is a community dedicated to literary thinking and creation.

2. Pen Dance Troupe: "Pen" represents a writing tool, while "dance" implies that words are as rhythmic and fluid as dance. This name vividly expresses the dance and vividness that team members pursue in their writing, while the word "Tuan" emphasizes the cooperation and common goal of the team.