I'm Back After Wearing It Quickly

Zhang Mengmeng was bound by a quick travel system, She plays various roles in the Three Thousand Worlds and learns various skills~ She thought she would travel through time endlessly, but who knew that the quick-travel system was destroyed. When she opened her eyes again, she was back in her own body? ! Moreover, the black technology and other knowledge she learned in the world of fast travel can be used in the modern world! ! ! PS: A cool article after the brainless time travel back, also known as "Maximum Boss in Modern Times". Conception: