diff --git a/README.md b/README.md
index 2d514b9..802ded1 100644
--- a/README.md
+++ b/README.md
@@ -79,7 +79,7 @@ I'm Bruce from [PlanckerDAO](https://twitter.com/PlanckerDAO), [EIP Fun](https:/
 
 | Name    | 4.05 | 4.06 | 4.07 | 4.08 | 4.09 | 4.10 | 4.11 | 4.12 | 4.13 | 4.14 | 4.15 | 4.16 | 4.17 | 4.18 | 4.19 | 4.20 | 4.21 | 4.22 | 4.23 | 4.24 | 4.25 | 4.26 | 4.27 | 4.28 | 4.29 | 4.30 | 5.01 | 5.02 | 5.03 | 5.04 | 5.05 | 5.06 | 5.07 | 5.08 | 5.09 | 5.10 |
 | :------ | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- | :--- |
-| Bruce   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  |      |      |
+| Bruce   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   |
 | Croath  | ⭕️  | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  |      |      |
 | Stephen | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   |      |
 | Fanka   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   |      |      |      |      |      |
@@ -91,7 +91,7 @@ I'm Bruce from [PlanckerDAO](https://twitter.com/PlanckerDAO), [EIP Fun](https:/
 | Jomosis | ⭕️  | ✅   | ⭕️  | ⭕️  | ⭕️  | ❌   |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |
 | Wenbo   | ⭕️  | ✅   | ⭕️  | ✅   | ✅   | ⭕️  | ✅   | ⭕️  | ✅   | ✅   | ⭕️  | ⭕️  | ❌   |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |
 | Steven  | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   |      |      |      |      |      |      |
-| megtog  | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ⭕️  
+| megtog  | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ⭕️  |
 | qiwihui | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   |      |
 | loxia   | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ⭕️  | ✅   | ✅   | ✅   | ✅   | ✅   | ⭕️  | ✅   | ✅   | ⭕️  | ✅   | ✅   | ⭕️  | ✅   |      |      |      |      |      |      |      |      |      |      |      |      |      |
 | bob     | ✅   | ⭕️  | ⭕️  | ⭕️  | ⭕️  | ❌   |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |      |
diff --git a/brucexu.md b/brucexu.md
index 60e5c74..a887cd4 100644
--- a/brucexu.md
+++ b/brucexu.md
@@ -4,6 +4,12 @@ Hi guys, I'm Bruce, I'm learning Ethereum Protocol. I'm good at Web development.
 
 ## Notes
 
+### 5.10
+
+[Study Group Week 6 | Sharding and DAS](https://epf.wiki/#/eps/week6-research)
+
+看了一下 Deck 比较基础，主要是 Sampling 的概念
+
 ### 5.9
 
 请假