The moment Zhang Taixuan opened his mouth, all the others had fixated on him, including Zhang Tie.
Although Zhang Tie appeared a bit shocked, he was extremely calm inside; because Zhang Taixuan's response was within his expectation.
The three knights followed Zhang Taixuan into that mountain cave. According to their talk, they were very familiar with Zhang Taixuan; especially that shadow knight surnamed Huang.
Additionally, they were not wanted by the supreme court and didn't need to hide. Therefore, they might have already met Zhang Taixuan in Youzhou Province, in the public. Zhang Taixuan couldn't disavow it. If Zhang Taixuan remained silent at this moment, when supreme court figured out the background of the shadow knight surnamed Huang and his trace in Youzhou Province, Zhang Taixuan's silence would bring him big troubles. Therefore, Zhang Taixuan had to take his stand at this moment.