A city implements the "4050" project, which aims to tailor jobs for people in this city who are over 40 years old and men over 50 years old who have difficulty re-employing after being laid off, using market-oriented and socialized operating mechanisms. To promote their employment. According to the above definitions, Which of the following can apply for 4050 project employment opportunities:. ['Zhang is a Henan native working in this city. Because he is over 50 years old and cannot find a job, he goes to the 4050 project to apply for employment.', 'Liu has not been working in the city. When she heard this employment policy, she went to the 4050 project to apply for employment.', 'In 1990, after being laid off from a factory in Shanghai, 30-year-old Auntie Liu set up a shoe repair stall. Due to bad business, she did not do it last year. She is idle at home now.', 'er retiring from a middle school, Mr. Zhang, due to his good health, looks like he is only about forty years old. He feels that he has nothing to do at home, so he applies for reemployment at 4050.']