Mao Collection, Middle Volume Radical: Door (hù) Shi Kangxi strokes: 7 Page 415, Entry 03 Guangyun and Yunhui: Pronounced shi. Erya (Erya), Explanation of Palaces: The base of a door is called shi. Note: Erya uses the alternative form. Commentary: This refers to the pivot of a door. See the detailed note for that character. Also, the edge of a hall is called shi. Book of Documents (Shangshu), Charge to Duke of Bi: Four men wearing patterned caps and holding spears, standing on either side of the two stairs and the threshold. Also refers to a stone step or threshold. Zhang Heng, Western Capital Rhapsody (Xijing fu): Golden thresholds and jade stairs. Also, Jiyun (Jiyun): Xi is the ancient form of shi. See the note under the Si collection, six-stroke section for details. Textual research: In the phrase hall curtain, the character shi has been corrected to hall edge in accordance with the Kong Anguo commentary on the Book of Documents.