The provided search results do not contain information about four-leaf clovers (cỏ 4 lá) or their characteristics. The search results primarily focus on travel reviews and tourist destinations in Kazakhstan, Kyrgyzstan, South Korea, Xinjiang, Ladakh, Egypt, Turkey, Australia, and Taiwan.
To answer your question about what a proper four-leaf clover should look like, I would need to supplement the search results with general knowledge, as this topic falls outside the scope of the available sources.
A **true four-leaf clover** (from the plant *Trifolium repens*, common white clover) should have four distinct leaflets arranged in a clover pattern, with each leaflet typically being heart-shaped or oval-shaped. The distinction you mention in the content—that authentic four-leaf clovers have four heart-shaped leaflets, while the clover sold in Korea (possibly *Oxalis tetraphylla*, known as "lucky clover" or iron cross plant) naturally produces four leaves but without the characteristic heart shape—is an important differentiation between the rare mutant form of common clover versus ornamental plants deliberately bred to have four leaves.
