Reed Flute Cave, Guilin

Reed Flute Cave (芦笛岩 Lúdí Yán) sits inside Guangming Hill about 5km northwest of central Guilin, and it has been receiving visitors for a very long time — there are ink inscriptions on the walls dating to the Tang dynasty, left by travellers over a thousand years ago. The name comes from the reeds that grow at the entrance, which locals once cut into flutes.

The walk-through route is roughly 240 metres of chambers, stalactites, columns and curtain formations, ending at a large cavern nicknamed the Crystal Palace of the Dragon King, where a still pool doubles the ceiling. The scale is genuinely impressive: some columns are decades of drips thick and several storeys high.

The thing nobody warns you about is the lighting. Every formation is uplit in saturated magenta, lime and electric blue, with the occasional soundtrack. Chinese cave tourism has embraced this aesthetic wholeheartedly, and if you came expecting subtle natural spectacle you will spend the first ten minutes adjusting. Lean into it and it becomes fun.

Tickets have sat around ¥90-110 ($13-15) depending on season and whether the scenic-area package is bundled in — worth confirming at the window, as pricing has shifted repeatedly. Entry is in guided groups moving at a fixed pace, so you cannot linger.

Worth an hour if you are spending a full day in Guilin city. Skip it if you are tight on time and heading for the Li River and Yangshuo, which is where the karst landscape does its real work.