-Client client = TestUtils.generateClient();
-```
-
-## Usage
-
-* [`Step 1: Create a key`](#create-a-key)
-* [`Step 2: Create an account`](#create-an-account)
-* [`Step 3: Create an receiver`](#create-an-receiver)
-* [`Step 4: Create an asset`](#create-an-asset)
-* [`Step 5: Issue asset`](#issue-asset)
- * [`Firstly build the transaction`](#firstly-build-the-transaction)
- * [`Secondly sign the transaction`](#secondly-sign-the-transaction)
- * [`Finally submit the transaction`](#finally-submit-the-transaction)
-
-> For more details, see [API methods](https://github.com/Bytom/java-sdk/blob/master/doc/index.md#api-methods)
-
-## Create a key
-
-```java
-String alias = "test";
-String password = "123456";
-
-Key.Builder builder = new Key.Builder().setAlias(alias).setPassword(password);
-Key key = Key.create(client, builder);
-```
-
-## Create an account
-
-```java
-String alias = "sender-account";
-Integer quorum = 1;
-List<String> root_xpubs = new ArrayList<String>();
-root_xpubs.add(senderKey.xpub);
-
-Account.Builder builder = new Account.Builder().setAlias(alias).setQuorum(quorum).setRootXpub(root_xpubs);
-
-Account account = Account.create(client, builder);
-```
-
-## Create an receiver
-
-```java
-String alias = receiverAccount.alias;
-String id = receiverAccount.id;
-
-Account.ReceiverBuilder receiverBuilder = new Account.ReceiverBuilder().setAccountAlias(alias).setAccountId(id);
-Receiver receiver = receiverBuilder.create(client);
-```
-
-## Create an asset
-
-```java
- String alias = "receiver-asset";
-
-List<String> xpubs = receiverAccount.xpubs;
-
-Asset.Builder builder = new Asset.Builder()
- .setAlias(alias)
- .setQuorum(1)
- .setRootXpubs(xpubs);
-receiverAsset = builder.create(client);
-```
-
-## Issue asset
-
-### Firstly build the transaction
-
-```java
-Transaction.Template controlAddress = new Transaction.Builder()
- .addAction(
- new Transaction.Action.SpendFromAccount()
- .setAccountId(senderAccount.id)
- .setAssetId(senderAsset.id)
- .setAmount(300000000)
- )
- .addAction(
- new Transaction.Action.ControlWithAddress()
- .setAddress(receiverAddress.address)
- .setAssetId(senderAsset.id)
- .setAmount(200000000)
- ).build(client);
-```
-
-### Secondly sign the transaction
-
-```java
-Transaction.Template singer = new Transaction.SignerBuilder().sign(client,
- controlAddress, "123456");
-```
-
-### Finally submit the transaction
-
-```java
-Transaction.SubmitResponse txs = Transaction.submit(client, singer);
-```