Let's Undergo everything by using a situation state of affairs. But ahead of that, let's mention some OOP concepts. @MarkusMeskanen: since the object is immutable, and if you mutated it in position you could not specialise it in the subclass. 宋晓东报告了项目总体任务、技术路线和工作安排。项目分解为四个课题，分别为大震震源区精细结构与应力模型、大地震全过程仿真以及危险源识别、大地震破裂... https://goodresidentialprojectsgurgaon.news.blog/2025/09/12/jms-the-majestic-sector-m9-manesar-gurgaon-nature-inspired-low-rise-luxury-living/