Because Zheng Yichen's built-in space already had a fixed foundation, this time, the enhancement using three half-dimension remnants stayed within an acceptable merit point cost for him.
Enhancing the built-in space has always been expensive because this type of enhancement is stable—it maintains effectiveness even in low-energy environments, unlike other items that lose utility in such settings.
So, these merit points had to be spent.
Three half-dimension remnants extended the built-in space's length, width, and height by 25 meters, upgrading its dimensions from the original 55×55×55 to 80×80×80. The internal capacity increased by more than threefold.
Such an improvement was already quite impressive. Zheng Yichen casually set a small goal of eventually achieving triple digits in the length, width, and height measurements.