Transit in Beijing Capital Airport T3

Singapore - Beijing - Urumqi: Arrive at the International Arrival Level at 3F of T3-E → accept Health & Quarantine → Inspection → go through the Entry Frontier Inspection → take APM at 2F of T3-E to reach 2F of T3-C → go to the International Baggage Claim Hall → go through the Animal & Plant Quarantine (sample check) → accept the Customs Inspection located north of the International Baggage Claim Hall → enter into the I-D Transfer Hall → finish domestic flights transfer procedures & deliver baggage → take the special elevator upstairs to 3F of T3-C → pass the Domestic Security Inspection →Waiting & boarding

Kashgar - Beijing - Singapore: Arrival at the Domestic Arrival Level at 2F of T3-C → proceed with international flights transfer procedures at the D-I Transfer Counter at 2F of T3-C → take special elevator downstairs to the Transfer Hall at 1F → check boarding pass → upstairs to APM platform at 2F of T3-C → take APM to reach 2F of T3-E → go to Customs, Immigration and Quarantine at 2F → go through the Heath & Quarantine Inspection → pass through the Exit Frontier Inspection → accept Security Inspection → accept Customs Inspection → Waiting & Boarding

In addition, yes, there are hourly lounges inside the airport. Upon landing, you can easily find the place based on the detailed English signs at the airport. Don't worry.

Thanks Lucas for the information.