A first-person record of one day (a live earnings counter sits top-left). Job one, a Hisense TV: clear picture but no sound even at volume 100; checked with a ‘Da Vinci tester’, two small components found open, desoldered and replaced, power on and the long-lost sound is back — perfect repair, ¥150; the creator also invites viewers’ LCD TV questions. Job two, a floor washer that won’t charge and shows fault code E10: pull the pack and measure, two cells badly aged, so all 6 original cells are replaced; each new cell is checked on a battery tester (internal resistance meter) (ASR readings of 10.17 / 11 and so on); the ‘Kill-You 3000’ spot welder welds thick nickel strip to try the weld quality — perfect; pack fitted, anti-vibration foam stuck on, hot glue heated and applied, fixed and OK, earnings jump to 440 (+290). Job three, a health kettle: the ‘tian’erte’ (thermostat / thermal fuse) replaced, 890 watts, 4 amps, that’s right, earnings 450. Job four, a restaurant electric cooker with a broken cord end: rewiring sounds simple but is a hassle, the plastic has hardened and is hard to open; cut off the end and fit a new cable, 16A cable for 3000 watts; a touch-up solder that isn’t solid gets redone; when done it looks original, ¥30. ¥480 for the day, knock off. 469 comments, heavily divided: ¥150 for two diodes is ‘brutal’, a used TV is only ¥120 so not worth repairing; the other side: ‘you’re paying for skill, if you think it’s expensive you’re a layman’ (liked by the creator); ¥290 for 6 cells plus labor is a bit high, over ¥200 profit; someone built their own ‘Kill-You 3000’ and asks for pointers.