How does MEXC work?

Can you please explain to me in simple terms how MEXC operates as a cryptocurrency exchange platform? I'm curious about the processes involved in buying, selling, and trading digital assets on MEXC, as well as its security measures and user interface. Additionally, I'd like to know about the types of cryptocurrencies available on the platform and any unique features that set it apart from other exchanges. How does MEXC facilitate seamless transactions for its users, and what steps does it take to ensure the safety of funds and personal information?