Where to get info on subway to take from Kunming airport to Sifu street?

For Sifu Street, I do not think there is such a street in KM downtown area.
Do you refer to the Shifu Street in Dongchuan District?
If so, you need to take the airport shuttle bus line 2 to reach KM Railway Station. At the railway station, you can take the local bus line 23 to reach West Bus Station. From West Bus Station, you can find the buses to reach Dongchuan. Upon reaching Dongchuan, you can take a taxi to reach Shifu Street.