First, rising quickly and falling slowly is most likely not a top, but the main force collecting positions.

The real danger is after a volume surge, when a large bearish candle drops straight down.
Second, falling quickly and rising slowly, don't think it's giving you an opportunity.
Many times, that's not a rebound, but the main force's last attempt to trick you in.
Third, high volume at a high level doesn't necessarily mean it's over; no volume at a high level is the real danger.
Fourth, a sudden increase in volume at the bottom, don't get excited yet.
A single day of volume surge is most likely a show. The real bottom that can be trusted often appears after a period of no one speaking, with several days of slow volume increase.