题目：Which of the following musical instruments were introduced to mainland China from the Western regions?
Bamboo flute (竹笛).
Konghou or harp (箜篌).
Hujia or nomad flute (胡笳).
Pipa or lute (琵琶).
题目：Which of the following musical instruments were introduced to mainland China from the Western regions?
Bamboo flute (竹笛).
Konghou or harp (箜篌).
Hujia or nomad flute (胡笳).
Pipa or lute (琵琶).
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