diff --git a/sandwich/README.md b/sandwich/README.md
index 0e6641d..c7c30bb 100644
--- a/sandwich/README.md
+++ b/sandwich/README.md
@@ -4,8 +4,6 @@
 
 ### tl, dr
 
-<br>
-
 *  predict trade opportunities that will mine into a future block by pushing another user’s trade opportunity to its max slippage limit, which will result in an arbitrage opportunity at a later time (typically within the same block).
 
 * sandwiching is a common situation that occurs when a searcher identifies a large trade in the mempool that will cause an impact on the price of an asset.
@@ -30,31 +28,10 @@
 
 ---
 
-### cross-trading arbitrage like sandwich
-
-<br>
-
-- a sandwich arbitrage has characters as below:
-      - In the same block, the attacker's transactions contain a start transaction, an end transaction, and one or more victim transactions in between.
-      - the combination of attacker and victim needs to satisfy an essential condition: the from address is not the same.
-
-
-- the `CombinedTransferTable` of each transaction contains the same Address processing the Trade. Combining the Attacker's Start Transaction and End Transaction give the CombinedTransferTable of this arbitrage having the final net surplus.
-
-
-<br>
-
----
-
-### examples in the wild
-
-<br>
-
-
-* https://etherscan.io/tx/0x90f2f133fcfe8e1870b69323ea0b46193b9443a701b4cef81a14c727a1df648f
-* [a MEV bot sandwich attacked this user](https://etherscan.io/tx/0xa79dfb5d4442a4ff04768c638bf306b75340ac325e86c34653904ab7f7429ac5)
-* [bot spent $18,583.13, to make $19,182.43](https://etherscan.io/tx/0x206203f5d62b8027fc8ad0c88be2b6d7b8e9c6b5b81a49c9a8d1c227d6027018)
+### in this dir
 
+* [interesting txs in the wild](interesting_examples.md)
+* [cross-trading arb like sandwich](cross_trading.md)
 
 <br>