The white lion is the wild symbol. He can land stacked on all the reels and substitute for all the other symbols, except the scatter symbol, to help and form winning combinations.
The game's logo is the scatter symbol and while it doesn't offer any scatter payouts it is the key to triggering the free spins.
If you land the lion scatter symbol on reels two, three and four simultaneously then the Free Spins begin. You are given five free spins with extra wild symbols added to the reels to help you land bigger wins. Furthermore, the free spins can be infinitely retriggered by landing three more scatters.
Bai Shi offers a top payout of 2,000x if you can land five wilds across a payline. The golden crown can payout up to 400x, while the other three high value symbols (the lion cubs, lioness and eagle) can all payout up to 250x.