# Deposit
### **What is Deposit**
Zecrey Legend is a zk-rollup based layer 2 protocol on top of BNB chain.
To deposit is to send assets on the underlying L1(BNB Chain) to your L2 account for further transactions on L2. Assets deposited to L2 are no longer distinguished by their original chain networks. Currently, this function is activated on Legend and BNB Chain, and users can deposit BNB from BNB Chain to their Legend L2 accounts.
You need to [register a Legend](/product-handbook/zecrey-legend-l2/l2-account-registration.md) account before depositing to L2.
### **Deposit in Mobile App**
**Step 1**: Enter **Trade Center** and click "**Deposit**" to select a token. or click on the asset you want and select "**Deposit**" on the asset detail page.
**Step 2**: Input the deposit amount within the limit of your balance.
**Step 3**: Choose an appropriate gas fee between the three speeds of **Slow**, **Average** and **Fast**, which is automatically calculated according to the current on-chain state and your transaction amount. You can also enter a gas fee manually in the **Advanced Setting**. The type of gas fee burned in L1 transactions depends on the network where you make the transaction. For depositing assets on BNB Chain to Legend, the gas fee will be charged in BNB.
**Step 4**: Confirm and enter your password to complete the transaction. Once the transaction on L1 is confirmed, the deposit will be added to your Legend L2 balance.
### **Deposit in** Extension
**Step 1**: Click "**Deposit**" and select the token you want to deposit.
**Step 2**: Input the deposit amount within the limit of your balance. You can also select **Deposit to other Layer2 account**.
**Step 3**: The gas fee will be automatically calculated according to the current on-chain state and your transaction amount. You can also manually change the gas fee by adjusting gas price (GWEI) and gas limit. The type of gas fee burned in L1 transactions depends on the network where you make the transaction. For depositing assets on BNB Chain to Legend, the gas fee will be charged in BNB.
**Step 4**: Confirm the transaction. Once the transaction on L1 is confirmed, the deposit will be added to your Legend L2 balance.
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.zecrey.com/product-handbook/zecrey-l1-wallet/deposit.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.