# With Cyano on PC
*Cross-chain transfers require gas fees. Assets across different chains use different types of assets as gas fees. Please prepare the corresponding gas fees in advance to avoid transaction failure.*
Gas fee type:
Ontology → Ethereum: ONG + a small amount of assets to be transferred
Ontology → OEC: ONG + a small amount of assets to be transferred
Ontology → Neo: ONG + a small amount of assets to be transferred
Ethereum → OEC: ETH
Ethereum → Ontology: ETH
OEC → Ontology: OKT
OEC → Ethereum: OKT
Neo → Ontology: nNEO + GAS
*For Ethereum related transaction, the gas fee is around 10-12 times of Ethereum med gas fee cost.*
In this tutorial, we illustrate the process by transferring Ontology-based WING tokens to OKExChain-based WING tokens.
Open the Wing official [website](https://wing.finance/), click "**Asset Swap**" in the upper right corner, select "**PolyNetwork**", and enter the **PolyNetwork** cross-chain bridge page.
You can also visit directly.
Click the asset selection box under "**Asset**", and enter the asset to be transferred in the“**Select Asset**” search box. Enter "WING" and select it below.
Click "**From Network**" to select the asset’s corresponding network (in this case, it is Ontology). Then click "**To Network**" to select the network to transfer to (e.g. OKExChain).
Enter the amount of assets to be transferred in the "**Amount**" box, and then click "**CONNECT WALLET**". On the pop-up wallet connection page, select the corresponding wallet connection. In this example, we need to connect Cyano and MetaMask.
Click "**NEXT**", and then click "**CONFIRM**" after confirming the information in the pop-up window. Then confirm the information in the wallet pop-up window to initiate the transaction. You can then view the transaction’s status on the “Transaction Details”page. The transfer is complete when "**Finished**" is displayed.
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