Liquidity is the core of DEX. Without liquidity, traders would not be able to swap tokens. Without sufficient liquidity, traders would suffer large price impact/slippage.
How to add liquidity
Anyone can add liquidity to the liquidity pools, there is no minimum amount requirement. When you add liquidity to the liquidity pools, you will receive the corresponding LP tokens. For example, if you add liquidity to the BNB/MODO pool, you will receive the BNB/MODO LP token.
You can find a step-by-step tutorial on how to add liquidity on the below page.