Selling ELA Coin, the native cryptocurrency of the Elastos blockchain platform, can be done through various online cryptocurrency exchanges. These exchanges allow users to buy and sell a wide range of digital currencies, including ELA Coin. Here are the steps to sell ELA Coin:

1. Choose a reputable cryptocurrency exchange: There are several exchanges that support ELA Coin trading, such as Huobi, Binance, Bitfinex, and KuCoin. It is important to choose a reliable and secure exchange to ensure the safety of your funds.

2. Create an account: Sign up for an account on the chosen exchange by providing your email address, creating a password, and completing the verification process. Some exchanges may also require additional verification steps, such as providing identification documents.

3. Deposit ELA Coin: Transfer your ELA Coins from your digital wallet to the exchange's wallet. This can usually be done by generating a deposit address on the exchange and sending the coins to that address.

4. Place a sell order: Once your ELA Coins are deposited on the exchange, you can place a sell order. Specify the amount of ELA Coins you want to sell and set the price at which you want to sell them. You can choose to sell at the current market price or set a limit order for a specific price.

5. Execute the order: Once your sell order is placed, it will be matched with a buyer's order, and the transaction will be completed. You can then withdraw the proceeds from the sale to your bank account or digital wallet.

6. Monitor the market: Keep an eye on the ELA Coin market to track price movements and make informed decisions about when to sell your coins. It is important to stay informed about market trends and news that may affect the price of ELA Coin.

Overall, selling ELA Coin is a straightforward process that can be done through cryptocurrency exchanges. By following these steps and staying informed about the market, you can successfully sell your ELA Coins and convert them into fiat currency or other digital assets.