The "entertainment tool" that Xiang Shan requested was a set of telescopes.
Although instruments aren't necessarily better when bigger, optical instruments like microscopes and telescopes do have a positive correlation between size and functionality. The larger the optical instrument, the stronger its capabilities. For Cybernetically Enhanced People, optical instruments carried with them rely not only on the capability of pure optical components but also on software and the human brain to perfect the images.
The "entertainment item" Xiang Shan obtained was a three-meter-high optical telescope, which allows for direct wired access and lossless transmission of real-time image signals without needing to look through it directly.
