“Learn from the bottom of your heart” means to sink your mind to study deeply and study with concentration.

"Looking up and thinking" means to pay attention to observing the things around you during the learning process, and integrate theory with practice. Only reading, studying rotely, and not being good at combining reading and thinking will ultimately fail to achieve the true purpose of reading.

Confucius once warned us: "Learning without thinking will lead to failure; thinking without learning will lead to peril." This means that if you only study without thinking, you will be confused; if you only think without learning, you will be confused. You will be lazy and achieve nothing. This sentence of Confucius could not have more incisively discussed the dialectical relationship between "looking down to learn" and "looking up to think". We should keep in mind the teachings of the sages, gain something from practice, and gain something from thinking.