Kaiping's diaolou towers, the Guangdong frontier that Let the Bullets Fly borrowed

From the coach window the land looks like any other stretch of the Pearl River delta — flooded paddy, banana leaf, a fishpond catching the light — and then a tower stands up out of it. Nine storeys of grey concrete, a colonnade bolted to its crown like a borrowed hat, gun-slits where the windows should be. There is no old town here, no ticket gate you can see from the road. The diaolou (碉楼, diāolóu) rise straight from the fields, one village at a time.

Money that came home and built upward

The towers are the work of huaqiao (华侨, huáqiáo) — Kaiping men who sailed for San Francisco, Vancouver and the tin mines of Malaya in the late nineteenth century and sent their earnings back. From roughly the 1900s to the 1930s that money went into concrete, imported cement and steel window-shutters, and it went up rather than out, because the delta flooded and the countryside was thick with bandits. A diaolou was a house and a fortress at once: living floors below, an arcaded watch-gallery on top, iron doors you could bar from the inside.

What makes them strange is the styling. A returnee who had seen a bank in Chicago or a church in Penang would ask the local mason for a Roman dome, a Greek portico, a Baroque pediment or a row of arches, and get all of them stacked on a Chinese village base. Kaiping once held more than three thousand of these towers; over eighteen hundred still stand, and in 2007 the cluster became Guangdong's first entry on the UNESCO World Heritage list.

这些碉楼多由旅居海外的华侨出资兴建，既是住宅，也是乱世里的堡垒。

What the cameras came for

The look — a frontier town bristling with towers, half-modern and half-feudal — is exactly what Let the Bullets Fly (让子弹飞, Ràng zǐdàn fēi), Jiang Wen's 2010 bandit story set in the 1920s south, needed and could not have built from scratch. The production worked among the Kaiping towers and walled gardens, and audiences who had never heard of the county suddenly recognised the silhouette. A film that spends its energy on gunplay and double-cross rests, visually, on architecture that predates it by ninety years.

Much of that silhouette belongs to Li Garden (立园, Lì yuán), a walled estate of canals, pavilions and a private diaolou that a returnee named Xie built over roughly a decade from the 1920s. It reads as a film set because it was, in a sense, always one — a self-made man's idea of what money earned abroad ought to look like at home, rendered in concrete, wrought iron and imported tile. You walk it now on the same paths, past the same fishponds, that the crew framed.

The four clusters, and how each reads now

Only four clusters are open to visitors, and they are not next to each other. Zili Village (自力村, Zìlì cūn) is the one on the postcards: fifteen towers and villas standing in wet paddy, doubled in the water, close enough that you cross between them on raised paths. Come on a clear morning before the wind picks up and the reflection is the whole reason to be there.

Majianglong (马降龙, Mǎjiànglóng) is the quiet one, its towers half-swallowed by bamboo and betel palm along a river, so that you find them by walking rather than by looking across a field. Jinjiangli (锦江里, Jǐnjiānglǐ) holds Ruishi Lou (瑞石楼, Ruìshí lóu), finished in 1923 and rising nine floors — known locally as the king of the diaolou (碉楼之王, diāolóu zhī wáng) — its top storeys a pile-up of columns, balustrade and a domed pavilion you climb toward on narrow stairs. Individual clusters run roughly ¥50 to ¥80, a combined ticket around ¥180, and gates open about 08:30 and close by 17:30. Prices and the exact ticket combination shift year to year, so buy at the first gate rather than through an app you cannot read.

Getting there, and the mistake to avoid

Kaiping (开平, Kāipíng) sits in Jiangmen prefecture, about two hours by coach from Guangzhou; buses run from the city's southern and provincial stations to Kaiping's Yici depot (义祠), and the Shenzhen–Maoming line now stops at Kaiping South (开平南) for those coming by rail. Neither of them drops you at the towers.

That is the thing to plan around. The four clusters are spread ten kilometres and more apart across farmland, with no walkable old core linking them, so the sensible move is to hire a car or a Didi driver for a half or full day and treat the towers as a rural circuit. Go on a weekday morning, ahead of the Guangzhou coach groups; the rice is green in early summer and gold by late October. The common mistake is to arrive after lunch expecting a compact heritage street and try to see all four before the gates close. Pick two, give each a morning, and let the third be a tower you spot from the road and stop for.