Xieyi — literally "writing the idea" or "conveying the spirit" — is in every sense the philosophical and aesthetic counterpart to gongbi, a mode of painting that deliberately prioritizes the expressive, spontaneous, and essential over the meticulous, controlled, and descriptive, and whose seemingly effortless brushwork conceals a sophistication of intention and a depth of technical mastery that only becomes fully apparent upon extended contemplation. Where gongbi painters build their images through careful, layered accumulation — outline first, then color wash upon color wash — the xieyi painter works with speed and conviction, committing each brushstroke in a single decisive gesture that cannot be corrected or retouched, the quality of the mark depending entirely on the painter's internalized understanding of the subject, the responsiveness of their brush to variations in pressure and speed, and the particular state of focused receptivity that Chinese aesthetic theory describes as the alignment of hand, eye, and mind. The style is most powerfully realized in ink monochrome — a single brush loaded with ink of varying dilutions producing a complete range of tone from luminous pale gray to deep saturated black — and its greatest subjects are those that lend themselves to gestural summary: bamboo, orchids, rocks, fish, shrimp, and the gnarled branches of ancient trees, all of which can be evoked in a few swift strokes that capture the living essence of the subject without laboring over its surface appearance. The xieyi tradition is inseparable from the Chinese understanding of painting as a form of self-expression continuous with calligraphy and poetry — the brushstroke as a direct record of the painter's inner life — and its greatest practitioners, from the eccentric individualists of the late Ming to the modern master Qi Baishi, are celebrated as much for the quality of mind their work reveals as for its purely visual accomplishment.