Lying on the ground, Liu Yun looked up at the giant red moon hanging above her while panting heavily.
’This won’t do. I need to find a way to recover my stamina as quickly as possible. Otherwise, it will be a waste of this golden opportunity to gain experience and crystal cores.’
While she was thinking, the System’s mechanical voice suddenly rang out in her mind.
[Player, you should check the System Mall.]
Hearing this, Liu Yun’s eyes lit up. However, a second later, she couldn’t help complaining.
’System, you should inform me whenever new products become available in the System Mall.’
The System immediately replied, [New product notifications have been enabled.]
After saying that, the System fell silent once again.
Liu Yun rolled her eyes but didn’t say anything further. Using her mind, she opened the System Mall.
Seeing that no new icon had appeared, Liu Yun thought for a moment before opening the Medical Center Section.
After checking all the products available there, she still couldn’t find any recovery potions.
Frowning slightly, she thought, ’Potions are consumables. Could the System have listed them under the Food and Beverage Section instead?’
Although she was skeptical, Liu Yun still opened the Food and Beverage Section. Without hesitation, she selected the Beverage Section.
Beside the Mineral Water icon, six additional icons had appeared: Energy Water, Endurance Sport Drink, Recovery Milk (Random Fruit Flavor), Herbal Recovery Tea, Refreshing Lemon Tea, and Brain Boost Coffee.
Drinking Energy Water and Endurance Sport Drink could recover Stamina Points, drinking Recovery Milk and Herbal Recovery Tea could replenish Health Points, and drinking Refreshing Lemon Tea and Brain Boost Coffee could replenish Mental Points.
After thinking for a moment, Liu Yun opened the detailed information for Energy Water.
[Energy Water]
[Quality: Ordinary]
[Grade: Standard]
[Amount: 1 Bottle (100 ml)]
[Shelf Life: Permanent]
[Purchase Limit: Unlimited]
[Price: 5 System Points]
[Effect: Instantly restores 10 Stamina Points. Removes minor fatigue.]
[Cooldown: 1 Minute]
[Information: A lightly sweetened electrolyte drink. Popular among survivors during the early days of the apocalypse.]
[Buy] [Exit]
Liu Yun studied the information for a few seconds before opening the details for the Endurance Sport Drink.
[Endurance Sport Drink]
[Quality: Standard]
[Grade: Standard]
[Amount: 1 Bottle (100 ml)]
[Shelf Life: Permanent]
[Purchase Limit: Unlimited]
[Price: 20 System Points]
[Effect: Instantly restores 50 Stamina Points. Increases stamina recovery speed by 10% for 10 minutes.]
[Cooldown: 3 Minutes]
[Information: A professional athletic beverage containing concentrated nutrients.]
[Buy] [Exit]
After comparing both products, Liu Yun decided to purchase the Energy Water.
Her priority was recovering from fatigue, and the Energy Water’s fatigue-removal effect suited her current condition perfectly.
As for the Endurance Sport Drink, the additional stamina recovery effect would only be fully utilized while resting, making it less suitable for her current crystal-core farming plan.
Since she currently had 205 System Points, Liu Yun generously purchased ten bottles of Energy Water, spending a total of 50 System Points.
Ding!
[Thank you for your purchase, Player. The item has been delivered to your inventory.]
Liu Yun closed the System Mall interface before opening her inventory. A new Energy Water icon had appeared in the second slot.
[Energy Water]
[Information: A lightly sweetened electrolyte drink. Popular among survivors during the early days of the apocalypse.]
[10 / 999,999]
Using her mind, she took out one bottle of Energy Water.
When it appeared on the ground beside her, Liu Yun used her remaining strength to push herself upright. Grabbing the small bottle, she opened it and drank the contents in a few gulps.
Glug... glug... glug...
After she finished drinking, the empty bottle suddenly disappeared from her hand.
Liu Yun was stunned for a moment.
Then she recalled the empty containers from the self-heating rice and self-heating hotpot. She remembered that those containers hadn’t disappeared after use.
Looking at her empty hand, she muttered, "Could it be that the Energy Water isn’t actually from this world?"
Although she had some guesses regarding the origin of the System, she lacked sufficient information to draw any conclusions.
Pushing the thought aside, Liu Yun opened her status panel.
Her Stamina Points had increased by ten, while her System Point balance had dropped by fifty, leaving her with only 155 System Points.
After checking her status, she moved her body experimentally. To her surprise, the exhaustion that had nearly crippled her moments ago had vanished completely.
Regaining her strength, Liu Yun stood up, dusted off her T-shirt and pants, then surveyed her surroundings.
Seeing that even more zombies had gathered nearby, she took a deep breath. "Let’s continue and collect as many crystal cores as possible."
As soon as the words left her mouth, Liu Yun gripped her wooden stick and charged toward the nearest zombie.
While she hunted zombies, time slowly passed, and the giant red moon gradually drifted toward the western horizon.
Two hours later, Liu Yun began feeling tired once again. Opening her status panel, she discovered that her Stamina Points had fallen below five.
Wiping the sweat from her forehead with the back of her hand, she thought, ’Looks like I will start feeling exhausted whenever my Stamina Points drop below five.’
Having discovered this useful piece of information, Liu Yun took out another bottle of Energy Water and drank it.
Instantly, the soreness in her muscles and the exhaustion disappeared. After recovering her stamina, she continued chasing zombies.
Fifteen minutes later, just as she was about to give up, Liu Yun finally obtained another crystal core.
Ding!
Hearing the crisp sound of the crystal core hitting the ground, Liu Yun’s eyes lit up. Without moving from her spot, she quickly asked, "System, how do I use my active skill?"