Seed are sometimes sold commercially while still enclosed within the hard wall of the fruit, which must be split open to reach the seed. Different groups of plants have other modifications, the so-called stone fruits (such as the peach) have a hardened fruit layer (the endocarp) fused to and surrounding the actual seed. Nuts are the one-seeded, hard-shelled fruit of some plants with an indehiscent seed, such as an acorn or hazelnut. Seeds are produced in several related groups of plants, and their manner of production distinguishes the angiosperms ("enclosed seeds") from the gymnosperms ("naked seeds"). Angiosperm seeds are produced in
Naked official abroad (or if they have no spouse, their children) from promotion Naked official Naked official () refers to Communist Party of China officials who stay in mainland China while their spouses and children reside abroad. The Chinese Ministry of Commerce has reported that from the beginning of reform and opening in 1978 to 2003 about 4,000 corrupt officials left China, taking at least $50 billion out of the country; often spouses and children went first. The government is setting up stricter monitoring systems to decrease the practice. In early 2014, a revision of the rules for the promotion and appointment