What moral questions that worried the Chinese were answered by the teachings of Confucius?

Confucius, with his teachings, gave an answer on how to properly establish a state and society, so that it would have such qualities as justice and stability. Confucius gave the concepts of good and evil. He described the principles of the relationship between the state and the people. He developed rules for actions for a person in society: the order of seating people at the table, the need to observe the language of signs and words during a tea ceremony, when talking with parents or reviewing documentation. This is what, according to Confucius, distinguishes people from animals.
We must always respond with good to good, and justice, to evil. One must always obey the elders and take care of the younger ones.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.