Active customer socialization refers to the process in which customers actively learn the knowledge and information related to their role in order to effectively participate in the service process. According to the above definitions, Which of the following are customers' active socialization:. ['Retired Aunty Zhang watches TV health programs every night.', 'Company employee Xiao Liu, in order to improve sales performance in a certain area, taught himself to be a local dialect.', "Xiaoming's mother also submitted an Olympic training course to help Xiaoming improve her Olympic results.", "Xiao Xie did not agree with the doctor's diagnosis of depression, so he searched a lot of information on the Internet."]