海

Hǎi surname Hai

hǎi ocean; sea; CL:個|个[ge4],片[pian4]; great number of people or things; (dialect) numerous

通

tōng to go through; to know well; (suffix) expert; to connect; to communicate; open; to clear; classifier for letters, telegrams, phone calls etc

tòng classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)

证券

zhèng quàn negotiable security (financial); certificate; stocks and bonds

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