Empty Box for National Survival? What's Wrong with Opening It Again?

Building survival, stability, non-cool writing, no harem, all staff's IQ online, new world view … Of the tens of billions of people in the world, only 100 million were drawn into the Rubik's Cube building to survive. But if you don't get drawn, does that mean you're safe? No. Once a survivor dies, the system will trace the bloodline and select his or her closest relatives to take over. Sooner or later, no one can escape. Lin Shuang, one of the first batch of time travellers, awakened the concept-level talent [Open Again]. Everything he opened with his own hands can be opened again. It can be as small as mineral water, cans, cabinet doors; as large as copies, treasure chests, exploration rooms... Or even the Rubik's Cube building itself. While others were licking blood on the tip of a knife and exchanging lives for resources, Lin Shuang kept avoiding risks and doubling his profits. He was sitting in the safe house with his legs crossed, piles of supplies at hand, and a list of survivors that was constantly changing in front of him. While he was growing quietly, the Blue Star countries were not idle either. They tried their best to penetrate, interfere, and transmit power, trying to leverage the rules from the outside and bring unpredictable variables to the inside of the building.