Chinese Character can‘t use in tikz

[edl7878]

If use chinese characters in tikz script, errors issued by kroki:

Error 400: ! LaTeX Error: Unicode character 计 (U+8BA1) not set up for use with LaTeX. See the LaTeX manual or LaTeX Companion for explanation. Type H for immediate help. ... l.8 node[concept] {计 (exit code 1)

if you try to use package that support chinese character render, still raise error by kroki:

Error 400: ! LaTeX Error: File `CJKutf8.sty' not found. Type X to quit or to proceed, or enter new name. (Default extension: sty) Enter file name: ! Emergency stop. l.3 \usepackage (exit code 1)

How to show chinese characters in tikz diagrams when using kroki to render tikz script?

Thanks.