Commercial Fixed Wing
Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument
Situational Awareness
Deviation - Altitude Crossing Restriction Not Met; Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented; Flight Crew Took Evasive Action; Flight Crew Executed Go Around / Missed Approach
Human Factors
On approach to Runway 25L in Hong Kong; ATC cleared us direct to Lotus then for the ILS 25L. Once we were past Lotus and established; we were descending to the final approach fix altitude of 1;300 feet. Without any terrain avoidance alerts from the airplane; 2 miles past Lotus; ATC told us 'low altitude alert... Go around'. We executed the missed approach and came back without any other issues. All three crew members agreed we were at 4500 feet passing Lotus and we had the altimeters set to 1006 as what ATIS [broadcast]. [ATC] said we had deviated over Lotus 200 feet low. Maybe something was wrong with the altimeter in the aircraft.
On approach to Runway 25L into Hong Kong; the crew was cleared direct to LOTUS then cleared the approach ILS 25L. We crossed LOTUS at 4500ft. (altimeter setting 1006hpa given by ATC)  and the First Officer made the radio called to ATC 'established ILS 25L'; ATC replied 'continue'  we then started a descent to 1300 ft. which was the final approach fix altitude; glide slope was not yet captured. About 2 miles past the LOTUS Fix ATC commanded a missed approach due to low altitude. At NO time were we off course and at NO time did the crew receive a terrain alert. We followed ATC direction and were vectored for another approach; Landed without incident. After landing I contacted the Tower Supervisor and spoke to him; he stated we were at 4300ft at LOTUS and that is why the Controller initiated the missed approach. Make sure to cross fix without a doubt the altitude needed. Verify FMA's.
Air carrier flight crew reported executing a go-around on approach to HKG after receiving a low altitude alert from ATC.