Recently, a new type of underground fortress integrated with a safety capsule system has completed its main structure and entered the testing phase. Its modular design and multi-layer protection technology have attracted industry attention.

The underground fortress is built based on deep geological structures, with independent safety capsule units embedded in the core area. The safety capsules are made of high-strength composite materials and equipped with air purification, emergency oxygen supply, and material storage modules, enabling independent survival support for more than 72 hours in extreme environments. Test data shows that the main fortress and safety capsules can withstand strong impacts and drastic environmental changes, with indicators such as temperature, humidity, and air quality inside the capsules remaining within safe ranges.

The project leader stated that the fortress serves both long-term residency and emergency shelter purposes, and the safety capsules achieve "instant protection upon entry". Currently, the system is being optimized in terms of communication stability and energy endurance, and is expected to provide new solutions for protection in special scenarios in the future.