This topic is a bit tricky. This paper mainly investigates the ethnic groups in the Spring and Autumn Period and the ethnic groups in the Spring and Autumn Period:

Lu: My eldest son, Boqin, was a feudal country with Qufu (now Qufu, Shandong) as its capital. It is one of the main vassal States of the Western Zhou Dynasty in the East.

Weiguo: A vassal of his younger brother Kang Shu, he sang in the capital (now Qixian County, Henan Province) and mainly ruled the adherents of Yin.

Jin State: It's a vassal state of Yu Shu and Wang Cheng's younger brother. They all belonged to the Tang Dynasty (now Yicheng, Shanxi) and were later renamed Jin.

Yan Guo: It is a feudal country with the same surname as Zhou. It may have been originally built in Dong Jialin, Fangshan County, Beijing, and later moved to Yuji near the southwest corner of Beijing. This is a vassal state in the northern Zhou Dynasty.

There is also a state of Wu.

Use the exclusion method directly, and exclude 2, so it should be 134, so the answer is C.