A painting of a large painting with a lot of paint on it

In a café，The protagonist sits with a mysterious partner。The two discussed the problem seriously，The partner points to a moving picture or file to explain the solution。The protagonist focuses on the other person's words，The expression gradually became clearer，It seems that the answer to the question has been found。The partner may have only appeared briefly to help solve the problem，But his appearance did have an important impact on the transfer of the protagonist。