The hesitation stemmed from Song Chi's thoughts on the incident at the Tros Mechanical House a few days ago. After he left the shop that day, he noticed nearly ten figures shadowing him. Regardless of any claims to the contrary, he simply couldn't believe it was unrelated to the Tros Mechanical House.
Granted, the Tros Mechanical House had a reasonable interest in identifying him and tracking his whereabouts given the scarce resources like Void Crystals, but Song Chi couldn't help but take extra precautions, especially considering that the auctioneer below on the stage was the patriarch of the Tros family himself, prompting Song Chi to be wary.
After much deliberation, Song Chi ultimately decided to use the Void Crystal. After all, among his possessions, the Void Crystal was the only item substantial enough to present. Not rushing to place his bid, Song Chi stood up and swiftly left the Tianhe Auction House under the watchful eyes of the various onlookers.