diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -8,44 +8,39 @@ The blockchain is an incorruptible digital ledger of economic transactions that
 Majority of the contents will be written in Chinese, English will also be included.   
 The repository will be continually updated.
 
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 ## Contents
 
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 ## Basic Introduction
 基础概念和原理介绍
 
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 ## Further Extesnsion
 相关补充与扩展书籍
 *  [区块链技术指南](https://yeasy.gitbooks.io/blockchain_guide/content/)
 
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 ## Development Tutorial
-[<img src="https://bitcoin.org/img/icons/logotop.svg" align="right" width="40">](https://www.hyperledger.org/projects/fabric)
 ### BitCoin 
+[<img src="https://bitcoin.org/img/icons/logotop.svg" align="right" width="80">](https://www.hyperledger.org/projects/fabric)
 *  [BitCoin white paper](https://bitcoin.org/bitcoin.pdf) / [比特币白皮书](http://www.8btc.com/wiki/bitcoin-a-peer-to-peer-electronic-cash-system)
 *  [Mastering BitCoin](https://github.com/bitcoinbook/bitcoinbook) / [精通比特币](http://zhibimo.com/read/wang-miao/mastering-bitcoin/index.html)
 
-[<img src="https://raw.githubusercontent.com/github/explore/875ffd6b3fb65c3f69deb4f269e87efda447cc8c/topics/ethereum/ethereum.png" align="right" width="40">](https://www.hyperledger.org/projects/fabric)
 ### Ethereum
+[<img src="https://raw.githubusercontent.com/github/explore/875ffd6b3fb65c3f69deb4f269e87efda447cc8c/topics/ethereum/ethereum.png" align="right" width="80">](https://www.hyperledger.org/projects/fabric)
 *  [Ethereum white paper](https://github.com/ethereum/wiki/wiki/White-Paper)
 *  [Ethereum wiki](https://github.com/ethereum/wiki/wiki)
 *  [Ethereum problems](https://github.com/ethereum/wiki/wiki/Problems)
 
 
-[<img src="https://www.hyperledger.org/wp-content/uploads/2018/03/Hyperledger_Fabric_Logo_Color.png" align="right" width="120">](https://www.hyperledger.org/projects/fabric)
 ### Fabric 
+[<img src="https://www.hyperledger.org/wp-content/uploads/2018/03/Hyperledger_Fabric_Logo_Color.png" align="right" width="120">](https://www.hyperledger.org/projects/fabric)
+
 
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 ## Releated Tools
 深入学习
 ### Solidity
 ### 
 
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 ## Projects and Applications
 
 [<img src="https://avatars3.githubusercontent.com/u/22163706?s=200&v=4" align="right" width="40">](https://github.com/mvs-org/metaverse)
@@ -59,7 +54,7 @@ The repository will be continually updated.
 
 [<img src="https://avatars2.githubusercontent.com/u/10536621?s=200&v=4" align="right" width="40">](https://github.com/ipfs/ipfs)
 ### IFPS
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+
 ## Contribute
 
 Contributions welcome!