Merge #281

281: Add bilibili videos links into book r=nikomatsakis a=armoha

Fixes #278 


Co-authored-by: armoha <kein0011@naver.com>

book/src/SUMMARY.md

@@ -6,7 +6,7 @@
 - [Common patterns](./common_patterns.md)
   - [Selection](./common_patterns/selection.md)
   - [On-demand (Lazy) inputs](./common_patterns/on_demand_inputs.md)
-- [YouTube videos](./videos.md)
+- [Videos](./videos.md)
 - [Plumbing](./plumbing.md)
   - [Diagram](./plumbing/diagram.md)
   - [Query groups](./plumbing/query_groups.md)

book/src/about_salsa.md

@@ -9,7 +9,7 @@ other similar tooling.
 
 If you'd like to learn more about Salsa, you can check out the
 [Hello World example](https://github.com/salsa-rs/salsa/blob/master/examples/hello_world/main.rs)
-in the repository, or watch some of our [YouTube videos](./videos.md).
+in the repository, or watch some of our [videos](./videos.md).
 
 If you'd like to chat about Salsa, or you think you might like to
 contribute, please jump on to our Zulip instance at

book/src/how_salsa_works.md

@@ -8,6 +8,8 @@ you'd like a deeper dive, [the "Salsa in more depth"
 video](https://www.youtube.com/watch?v=i_IhACacPRY) digs into the
 details of the incremental algorithm.
 
+> If you're in China, watch videos on ["How Salsa Works"](https://www.bilibili.com/video/BV1Df4y1A7t3/), ["Salsa In More Depth"](https://www.bilibili.com/video/BV1AM4y1G7E4/).
+
 ## Key idea
 
 The key idea of `salsa` is that you define your program as a set of

book/src/videos.md

@@ -1,4 +1,4 @@
-# YouTube videos
+# Videos
 
 There are currently two videos about Salsa available:
 
@@ -9,3 +9,4 @@ There are currently two videos about Salsa available:
   which digs into the incremental algorithm and explains -- at a
   high-level -- how Salsa is implemented.
 
+> If you're in China, watch videos on [How Salsa Works](https://www.bilibili.com/video/BV1Df4y1A7t3/), [Salsa In More Depth](https://www.bilibili.com/video/BV1AM4y1G7E4/).