The sudden pullback early in the morning of #UNI is due to the weekend. Every weekend until the following Monday is always a time for trend reversals.
Bitcoin hasn't moved much after breaking through, and at this time, the altcoins' pullback has provided an opportunity to get in over the weekend to Monday.
The altcoin pullback is not a basis for shorting contracts; it has already fallen and reached support, and continuing to pull back actually has limited space. One can place long orders below if possible, as shorting at this time would be quite uncomfortable, as it can easily bounce up, fluctuating at the support level. Bitcoin hasn't moved, so it’s difficult for altcoins to spike downwards.
Taking $UNI as an example, around 8.6 is close to the previous high, which is a larger level of support. Below that is just above 8.4, and then above 8.2, at most the extreme would be a spike down to 8.0, but a strong upward trend cannot be broken just by one day of pullback.
A weekend oscillation trend is possible; it will not break down, just oscillate. It does not rule out the possibility of enthusiastic repeated testing while oscillating on the way to breaking 9.0.
If the market chooses to decline, then it is the time to build positions on dips; do not hesitate, as hesitation may lead to regret if it rises next week.