Observer in the Courtyard

Why do photons in the double-slit interference experiment refuse to be observed? Is Schrödinger's cat dead or alive? Does the generalized observer effect really exist? After watching a series of short popular science videos, Jia Tian unexpectedly entered the world of courtyard house and became an "observer". From then on, the courtyard house changed drastically. Dying Light: Zombies are rampant. XCOM 2: The three chosen ones of the Presbyterian Church and the mutants invade the world. Risk of Rain 2: The Lord of Nothingness comes with a work of art of its creation. Lobotomy Corporation: The successive mutants challenge everyone's nerves. … In various post-fusion worlds, Jia Tian caused endless wonderful changes. Pay attention, this man's name is Jia Tian. The story begins here: "Love in the Courtyard" "People are like iron rice or steel" "Under the Zhengyang Gate" "..."