Bhopal (Madhya Pradesh): Bhopal’s Tisha Panthi and Indore’s Harmony Jain struck gold at the CBSE National Girls Swimming Competition on Wednesday, helping Madhya Pradesh collect four medals on Day 3.Tisha topped the Under-11 50m freestyle in 32.03 seconds, securing her second consecutive gold in as many days.Harmony matched the feat in the Under-17 50m freestyle, clocking 28.10 seconds to continue her strong run at the competition.