Just now, Su Yu was cross-legged on the ground, the upper half of his body covered with thick dark scales. He had guessed that if Situ Wuqing were to attack him, she could only target his exposed face. His hunch was correct; he hit Situ Wuqing with his thumb, but he was also injured. For both parties, it was exceptionally dangerous.
At the same moment, Su Yu confirmed his conjecture about Situ Wuqing's abilities.
Situ Wuqing could become invisible for a short period of time, but the prerequisite for her invisibility was the creation of a fake phantom double. While invisible, she couldn't attack. Only when her phantom double was attacked and destroyed did her invisibility break, allowing her to strike.
Thankfully, Situ Wuqing's invisibility had many limitations. Had there been no restrictions, even just this one ability would have been nearly invincible. However, even with these limitations, Su Yu currently had no better strategy to counter her.
