In my opinion, the chances of digging up Zigu are extremely low. I've played about five numbers, but I haven't dug. Perhaps I am the most unlucky one, and I only dug into Langu.
In fact, the low probability is also one of the reasons. In addition, because I'm not R, I'm a negative factor in winning the treasure, which is even harder to win, let alone dig. Once a week, you may not win, and the chances of winning are still low. It's boring after a long time, and I've been promoted to a higher level and raised a purple silence.
PS: It takes about 90 days to reach level 90, and you can win the treasure in seven days. Only when I reached the level of 90, did I have more than a dozen chances to participate in the treasure hunt that I might not win. If I get a good weekly discount in another month, it will be enough to silence Purple.