Just in case the writing is too small:
Jianghu vs modern meetings
Methods of invitation: through a courier or an acquaintance or by throwing a knife into the room of invitee (usually for a duel)
Methods of response: through said courier or acquaintance or just by showing up (for the duel)
Venue: a large auditorium of an important sect, a valley, a temple, a restaurant
Agenda: to determine who's the best in jianghu (also for duel), to respond to a general jianghu challenge (e.g., an expert swordsman on killing spree) or to win a girl's heart (also for duel)
Updates obtained from: gossips at restaurants, listening to conversation from a rooftop, rendezvous in a forest at night
Methods of invitation: email (formal, informal), whatsapp (informal), phone call
Methods of response: see above
Venue: office, cafe, corridor of a convention center, lobby of a hotel...
Agenda: most likely not to determine who's the best in jianghu.
Updates obtained from: email, whatsapp, social media, phone calls