Two little magic tricks.
One is a water manipulation spell using the "Profound Turtle Water Control True Spirit Secret Technique" to condense water in mid-air, and the other is a basic Daoist spell, the Fire Manipulation Curse.
Back in the Great Jing Dynasty, any cultivator would know what's up, especially since Lu Zheng didn't bother to hide the magical power fluctuations when performing the magic.
But...
Besides Lin Wan, no one else at the scene could sense these magical power fluctuations...
Lu Zheng: (◔◡◔)
"So, Mr. Wu, please!" Lu Zheng gestured with his hand, implying it's your turn now.
Wu Junyi's face changed, turning from pale to red, eyes darting around but failing to see the key to Lu Zheng's magic trick.
