add points

docs/allsetlearning/B2/因此.md

@@ -39,7 +39,7 @@
 
 - Level: [B2](https://resources.allsetlearning.com/chinese/grammar/B2_grammar_points) / [HSK4](https://resources.allsetlearning.com/chinese/grammar/HSK4_grammar_points)
 - Similar to
-  - [Cause and effect with "因为" and "所以"](https://resources.allsetlearning.com/chinese/grammar/Cause_and_effect_with_%22yinwei%22_and_%22suoyi%22) (A2)
+  - [Cause and effect with "因为" and "所以"](../A2/因为...所以.md) (A2)
   - [Expressing "and then" with "于是"](./于是.md) (B2)
   - [Expressing "in short" with "总之"](../C1/conjunctions/总之.md) (C1)
 - Used for: [Indicating cause and effect](https://resources.allsetlearning.com/chinese/grammar/Indicating_cause_and_effect)