thumb|upright=1.4|The ancient roads from Qin (Shaanxi) to Shu (Sichuan);file:carré 10 x 10 px red.png|8 px = city, 9 px = county (县, xiàn), thin lines = ill documented The Shudao (), or the Road(s) to Shu, is a system of mountain roads linking the Chinese province of Shaanxi with Sichuan (Shu), built and maintained since the 4th century BC. Technical highlights were the gallery roads, consisting of wooden planks erected on wooden or stone beams slotted into holes cut into the sides of cliffs.
thumb|upright=1.4|The ancient roads from Qin (Shaanxi) to Shu (Sichuan);file:carré 10 x 10 px red.png|8 px = city, 9 px = county (县, xiàn), thin lines = ill documented The Shudao (), or the Road(s) to Shu, is a system of mountain roads linking the Chinese province of Shaanxi with Sichuan (Shu), built and maintained since the 4th century BC. Technical highlights were the gallery roads, consisting of wooden planks erected on wooden or stone beams slotted into holes cut into the sides of cliffs.
== Geography ==
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).