Fig. 1

Information on two Chinese historical figures. a Distribution of trajectory points; b-d birthplace, residence, and sculpture of Su Shi; and e–g birthplace, residence, and sculpture of Zuo Zongtang

Information on two Chinese historical figures. a Distribution of trajectory points; b-d birthplace, residence, and sculpture of Su Shi; and e–g birthplace, residence, and sculpture of Zuo Zongtang