A twisted silk thread; the simplified side form is 纟.
Often relates to thread, rope, cloth, color, or connection.
按笔顺练习部首、简体、繁体以及可用的异体形式。
hóng
red
zhǐ
paper
gěi
to give
The radical 糸 has the simplified left-side form 纟, which is very common.
What is the radical in the character 红?