Cut the avocado in half, remove the pit, and place the flesh in a large bowl.
Finely chop the tomato, onion, cilantro, and Cheongyang chili pepper.
Mash the avocado flesh with a fork, adding lemon juice and salt.
Mix the chopped tomato, onion, cilantro, and Cheongyang pepper with the avocado.
Lightly warm the tortilla chips in a pan.
Serve the finished guacamole with tortilla chips.