Siheyuan: Make a Promise to the Mechanic and Let Me Catch the Enemy Agent

[Siheyuan+New Plot+Anti-Special+Spy War+Single Female Protagonist+Not Too Violent] Zhang Tiansuo traveled to the Qingmansiheyuan in 1961. Become a mechanic and awaken the mission system: [Task 1, curse someone once in Beijing movie dialect, and continue to output for 30 seconds. [Task 2, show off your silk grappling skills in public. In the courtyards and steel rolling mills, undercurrents are surging, and there are actually enemy agents lurking! Nine-headed Eagle enters the country secretly, and the Black Triangle Organization stirs up trouble again! Zhang Tiansuo cooperated with the Investigation Section and battled wits and courage with the spies!