A method for solving a problem and a system thereof are provided. The method includes displaying, by a first terminal device, an embedding content search interface, which is included in a content authoring user interface for creating target content to be transmitted, displaying, by the first terminal device, an indicator of embedding content, determined by user input via the embedding content search interface, in an editing area in the content authoring user interface, transmitting, by the first terminal device, a body of the target content and metadata of the embedding content in response to receipt of input for a “Send” button in the content authoring user interface, and displaying, by a second terminal device, received content with the embedding content embedded therein, wherein the embedding content is embedded in the body of the target content by a server system.