Spring Festival Nepal Challenge: EBC Everest Base Camp Trek

EBC+Gokyo Trek, get up close to 4 of the world's top ten peaks and numerous Himalayan snow mountains, an unparalleled snow mountain experience.
The highest accommodation altitude is at 5180 meters, and the highest altitude you can reach is the 5400-meter Chola Pass and the 5630-meter Kala Patthar viewpoint. You must have sufficient high-altitude experience to attempt this, do not blindly challenge.
EBC+Gokyo itinerary reference:
D1: Arrival in Kathmandu
D2: Kathmandu (4-hour drive) to Lukla (Ramechhap Airport to Lukla in March, April, October, and November, wake up around 2 am) to Phakding (3-4 hours trek, 2640m)
D3: Phakding to Namche (3440m)
D4: Namche to Tengboche/Deboche (3867m)
D5: Tengboche/Deboche to Dingboche (4350m)
D6: Dingboche to Lobuche (4930m)
D7: Lobuche to Gorak Shep (5180m) to Everest Base Camp (EBC) and back to Gorak Shep for overnight stay
D8: Gorak Shep to Kala Patthar (5630m) to Gorak Shep to Lobuche to Dzonglha (4830m)
D9: Dzonglha to Chola Pass to Thagnak (4700m)
D10: Thagnak to Gokyo to Gokyo Fifth Lake to Gokyo
D11: Gokyo to Gokyo Ri (5360m) to Gokyo to Machhermo (4410m)
D12: Machhermo to Namche (3440m)
D13: Namche to Lukla
D14: Lukla to Kathmandu (Ramechhap Airport)
D15: Departure