The Landing Account is like a cash wallet and can store funds that you are not currently trading. You can choose a specific currency to deposit and hold for a period, without any additional fees and swap fees (overnight interest).
In many different situations, traders will choose to withdraw the profit or funds and deposit them in the landing account first, and use them to transfer funds for the trading account at any time. In this way, traders can save possible currency conversion fees for frequent deposits and withdrawals, and can also quickly replenish margin for the account.
The landing account is also used for deposits and withdrawals, and you can deposit and withdraw funds from any landing account. When you withdraw funds, you also need to transfer the funds to the landing account first, and then summit the withdrawal.