In 2187 AD, on the ruins of traditional energy exhaustion, the Core Energy Alliance monopolized global crystal vein and card reader technology in the name of "Energy Savior" - a D-class energy card is a half-month survival quota for civilians; a modified contact is an "illegal evidence" for decapitation.
Lu Yan was just an apprentice at the Alliance Maintenance Factory, but he awakened his talent of "sensing core energy" under the emergency light of an abandoned supermarket because of half a yellowed "Card Making Manual". He used residual crystal powder to make temporary cards to save refugees, used solder to modify the card reader to break the alliance blockade, broke out from the black market to defend against enemies in the mines, and gradually broke the professional barrier of "card maker-card repairer", becoming a new generation of card master who can draw "bearing sky patterns" with bare hands and activate the energy of earth veins.
When the Alliance launched the S-level "Leyline Bomb" in an attempt to detonate the global crystalline network and establish an energy dictatorship, he held the energy-drained Transcendent A-level card and stood at the core of the remaining crystalline veins - behind him were the children waiting to be fed, allies fighting with injuries, and in front of him were the chief card maker's dragnet and world-destroying strategic weapons.
"Core energy should not be privately owned, and energy should be free." This master's dying whisper turned into the sharpest blade in his hand. The sky-bearing pattern draws the power of the earth's veins and reverses the situation of destruction. Let's see the young man use the remaining crystals as ink and the earth's veins as paper to draw a light of freedom that illuminates the world in the dark age of core energy monopoly!