There are multiple Chinese wealth gods. The most common 'civil' one is
赵公明 (Zhao Gong Ming), riding a black tiger and holding a gold ingot. The 'martial' wealth god is
关公 (Guan Yu, the Three Kingdoms general). Families welcome him on the fifth day of Lunar New Year (
大年初五), called
接财神 — setting off firecrackers before dawn to invite wealth in.